00921cam a22002771 4500 2647999 BD-DhUL 20141030150947.0 700914s1968 pauac b 000 0 eng 68015217 DLC DLC DLC BD-DhUL QD466 .W4 1968 549.2 WED Weeks, Mary Elvira, 1892- Discovery of the elements / Mary Elvira Weeks, Completely rev. and new material added by Henry M. Leicester. Illus. collected by F. B. Dains. 7th ed. [Easton, Pa.] : Journal of chemical education, c1968. x, 896 p. : illus., ports. ; 24 cm. Includes index. Chemical elements. Chemistry History. Chemists. Leicester, Henry Marshall, 1906- ed. 7 cbc orignew u ncip 19 y-gencatlg ddc BK 17416 17416 0 0 ddc 0 549_200000000000000_WED 0 NFIC 32925 DUSL DUSL GEN 1973-08-28 Gift 549.2 WED A103552 2014-10-30 2014-10-30 BK