00985cam a22002771 4500 2164500 BD-DhUL 20141117104758.0 790516s1953 nyua 000 0 eng 52005341 DLC BD-DhUL BD-DhUL QE770 .T8 1953 562 19 SHP Twenhofel, William H. (William Henry), 1875-1957. Principles of invertebrate paleontology [by] Robert R. Shrock [and] William H. Twenhofel. 2d ed. New York, McGraw-Hill, 1953. xx, 816 p. : illus. ; 24 cm. McGraw-Hill series in geology "A revised and enlarged edition of Twenhofel and Shrock, Invertebrate paleontology." Invertebrates, Fossil. Shrock, Robert R. (Robert Rakes), 1904-1993, joint author. Invertebrate paleontology. 7 cbc orignew u ocip 19 y-gencatlg ddc BK 19315 19315 0 0 ddc 0 562_000000000000000_SHP 0 NFIC 37041 DUSL DUSL GEN 2014-11-17 Purchased 562 SHP A165020 2014-11-17 20 2014-11-17 BK