00792cam a22002531 4500 6896376 BD-DhUL 20181217120154.0 911101s1936 moua b 000 0 eng 36023864 (OCoLC)24662022 DLC TxComS DLC BD-DhUL premarc 500 OBM Obourn, Ellsworth Scott 1897- Modern science problems : a textbook in general science / Ellsworth S. Obourn and Elwood D. Heiss. St. Louis : Webster Pub., c1936. v, 322 p. : illus., diagrs. ; 28 cm. Includes bibliographies. Science. Heiss, Elwood D. (Elwood David) 1899- joint author. Science problems. ddc BK 3810 3810 0 0 ddc 0 500_000000000000000_OBM 0 NFIC 6972 DUSL DUSL GEN 2056-02-05 Purchase 500 OBM 86878 2014-08-19 2014-08-19 BK