00876cz a2200217n 4500 n 80106813 DLC 20210310070111.0 800922n| azannaabn |a aaa n 80106813 (OCoLC)oca00487632 DLC eng rda DLC OCoLC TxHU OU 1884 1972 edtf Lefschetz, Solomon, 1884-1972 Differential equations lcsh Lefschetz, S. (Solomon), 1884-1972 Lefshet︠s︡, S., 1884-1972 His On the existence of loci with given singularities ... 1913. OCLC, July 29, 2010 (hdg.: Lefscheta, Solomon, 1884-1972; usage: Solomon Lefschetz, S. Lefschetz) His Algebraicheskai︠a︡ topologii︠a︡, 1949: t.p. (S. Lefshet︠s︡) Lectures on differential equations, 1948, ©1946: title page (Solomon Lefschetz)