1955. Sixth Impression. 251 pages. No dust jacket. Green cloth. Edited with introduction and notes by H.A. Needham. Book is in better condition than most examples of this age. Neat, clean, well bound pages with very minimal foxing, tanning and thumbing. Small inscriptions and neat labels may be present. Boards have mild shelf wear with light rubbing and corner bumping. Some light marking and sunning.