1966. No edition stated. 167 pages. No dust jacket. Green cloth. AS CZ1 1966. Includes various diagrams. Pages have slight foxing, tanning and minor thumbing. A few dog-eared corners. Pencil inscriptions to front endpaper. Bookseller's sticker to front pastedown. Boards have some moderate edge wear, with slight bumping to corners and minor bumping to spine ends. Boards a little rubbed and marked overall.Spine is slightly sunned with one droplet mark. Several minor dents to board edges.