1961. Reprinted. 223 pages. No dust jacket. This is an ex-Library book. Blue cloth covered boards. Black and white diagrams throughout. Ex library copy with associated labels, inserts, stamps and annotations. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Some cracking to gutters with exposed netting. Binding slightly loose. Some page corners folded. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces tanned and sunned, particularly spine. Gilt lettering is dulled. Boards are slightly bowed. Some marks and staining to surfaces.