00649cam a2200205 4500 43605901 TxAuBib 19940825120000.0 ||||||s1970||||||||||||||||||||||||und|u 71123826 TxAuBib Eiseley, Loren C, 1907-1977. The invisible pyramid / by Loren Eiseley. Woodcuts by Walter Ferro. New York : Scribner, 1970. 173 p : illus ; 24 cm. Bibliography: p. 159-164. Man. Civilization Philosophy. Human ecology.