Seller: R. M. Dreier, Bookaneer, Dodge Center, MN, U.S.A.
Dust Jacket Condition: None. Revised Edition Signet 451 j7956. Wild speculation? No-a very possible scientific theory. So possible that its probability has been seriously discussed by no less reputable an organization than the National Academy of Sciences. Very Good. Some creasing and chipping to wraps as shown in photos. MMPB 16mo. (4" x 7") in pictorial wraps. Seller Inventory # 115