1967. First Printing. 442 pages. Paperback book with orange paper covers. Contains black and white photographs, and some diagrams, throughout. Pages are lightly tanned, but text remains clear. Binding is firm. Previous owner's inscription to reverse of front cover, with stamp to page opposite. Paper covers have minimal edgewear, with minor curling to corners. Spine is moderately sunned and visibly creased, with minor scuffing to ends. Heavy black marking to rear cover.