The Master Key - HAANEL, Charles F.Psychology Publishing Co., 1977, Hardback in Dust Wrapper.
Condition: Good+ - in Poor DJ. DJ considerably edgeworn with several small nicks and chips with slight loss. Mildly bumped at head & tail of spine and corners. A nice copy.
Has been produced as a correspondence course of instruction, for which 350,000 people have paid a large fee each. 274pp. Index. Size: 8vo Demy (8½" x 5½") Introduction / preface by The Publishers.
This one has already found a new owner.