Builders of the ancient world : marvels of engineering / prepared by the Special Publications Division, National Geographic Society, Washington, D.C. - Washington, D.C. : The Society, c1986. - 199 p. : ill. (some col.) ; 26 cm. Includes Bibliography and index. ISBN: 0870445855 : $7.95 0870445901 (lib. bdg.) : $9.50 LCCN: 86005278 Subjects--Topical Terms: Engineering--History.Architecture, Ancient. LC Class. No.: TA15 / .B73 1986 Dewey Class. No.: 620.009 / BUA