00755cam a2200229 4500 62132150 TxAuBib 20020927120000.0 020927s1972||||||||||||||||||||||||eng|u 71179463 //r82 TxAuBib Wallace, Robert, 1919- The Grand Canyon / by Robert Wallace and the editors of Time- Life Books. With photos. by Ernst Haas. New York : Time-Life Books, [1972] 184 p. : illus. (part col.) ; 27 cm. American wilderness, The Bibliography: p. 180. 20020927. Grand Canyon (Ariz.) Time-Life Books. The American wilderness.