1965. 6th Edition. 309 pages. This is an ex-Library book. Green pictorial paperback. Ex-Library copy, with expected inserts, stamps and inscriptions. Pages are lightly tanned and thumbed at the edges, with light foxing. Binding has remained firm. Paper cover is lightly rub worn and thumbed with light shelf wear to edges and corners. Light creases to corners and spine. Light tanning to spine and edges.