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It also contained a completely original approach to visual puzzles, where edge matching could be forced by altering the profiles of the edges, a process described in Part I of the book. The results of these transformations are remarkably similar to work produced by Maurits Escher, and predate him by a decade and a half. As well as being important as a resource the subject is by no means exhausted. A worthwhile and important addition to any collection - in book and CD form (CD with much original, additional material).","brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51014406635793,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51014408962321,"sku":"NIN9781016167529","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1016167520.jpg?v=1750983041"},{"product_id":"combinatory-analysis-book-percy-alexander-macmahon-9781017720006","title":"Combinatory Analysis","description":"\u003cp\u003eThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.\u003c\/p\u003e\u003cp\u003eThis work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.\u003c\/p\u003e\u003cp\u003eScholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.\u003c\/p\u003e","brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51015234322705,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51015236649233,"sku":"NIN9781017720006","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1017720002.jpg?v=1750789500"},{"product_id":"combinatory-analysis-book-percy-alexander-macmahon-9781017728811","title":"Combinatory Analysis","description":null,"brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51015305625873,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51015308280081,"sku":"NIN9781017728811","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/101772881X.jpg?v=1751300133"},{"product_id":"memoir-on-the-theory-of-the-partitions-of-numbers-volume-1-book-percy-alexander-macmahon-9781018821184","title":"Memoir On The Theory Of The Partitions Of Numbers; Volume 1","description":null,"brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51016155529489,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51016157823249,"sku":"NIN9781018821184","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/101882118X.jpg?v=1751332451"},{"product_id":"introduction-to-combinatory-analysis-book-percy-alexander-macmahon-9781016148535","title":"An Introduction to Combinatory Analysis","description":"\u003cp\u003eThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.\u003c\/p\u003e\u003cp\u003eThis work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.\u003c\/p\u003e\u003cp\u003eScholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.\u003c\/p\u003e","brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51084969705745,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51084972294417,"sku":"NIN9781016148535","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1016148534.jpg?v=1750749981"},{"product_id":"combinatory-analysis-volume-1-book-percy-alexander-macmahon-9781018111179","title":"Combinatory Analysis; Volume 1","description":"\u003cp\u003eThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.\u003c\/p\u003e\u003cp\u003eThis work is in the public domain in the United States of America, and possibly other nations. 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We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.\u003c\/p\u003e","brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51181812252945,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51181815693585,"sku":"NIN9781018111179","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1018111174.jpg?v=1751014330"},{"product_id":"combinatory-analysis-volume-1-book-percy-alexander-macmahon-9781018106892","title":"Combinatory Analysis; Volume 1","description":"\u003cp\u003eThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.\u003c\/p\u003e\u003cp\u003eThis work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.\u003c\/p\u003e\u003cp\u003eScholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.\u003c\/p\u003e","brand":"WoB","offers":[{"title":"- \/ - \/ -","offer_id":51185158783249,"sku":"","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51185160847633,"sku":"NIN9781018106892","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1018106898.jpg?v=1750886319"},{"product_id":"introduction-to-combinatory-analysis-book-percy-alexander-macmahon-9781016143967","title":"An Introduction to Combinatory Analysis","description":"\u003cp\u003eThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.\u003c\/p\u003e\u003cp\u003eThis work is in the public domain in the United States of America, and possibly other nations. 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