00755cam a2200241 4500 153179550 TxAuBib 20040412120000.0 820507s1982||||||||||||||||||||||||eng|u 9780385182126 0385182120 (OCoLC)8473874 TxAuBib Halstead, L. B. The search for the past : fossils, rocks, tracks, and trails : the search for the origin of life / L.B. Halstead. 1st American ed. Garden City, N.Y. : Doubleday, 1982. 208 p. : ill. (some col.) ; 30 cm. Includes index. 20040412. Paleontology. TXJOU