Edited by A W Haslett - Penguin Science News 21 (XXI):

Penguin, Harmondsworth, Middlesex, 1951. First Edition, Softcover. Very Good Condition/No Dust Jacket. Ochre covers with white lettering, black lettering and Penguin on front and black lettering and penguin on spine. Slightly darkened at edges. Sound binding. Clean pages and end-papers. Quantity Available: 1. Shipped Weight: under 1 kg. Pictures of this item not already displayed here available upon request. Inventory No: 08315080276. ISBN: 0671890077

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