1962. No Edition Remarks. 116 pages. This is an ex-Library book. Paperback book with green paper covers. Contains black and white diagrams and graphs throughout. Expected library inserts, stamps and inscriptions. Pages remain bright and clear, with light tanning and marking to edges. Binding is firm. Paper covers have minimal edgewear, with minor curling to corners. Spine and edges are moderately sunned, with noticeable scuffing to the former. label to tail of spine. Some visible marks to covers.