Burkill, J. C. The theory of ordinary differential equations / J. C. Burkill. - 2nd ed. - Edinburgh : Oliver, c 1962. - ix, 114 p. : ill. ; 19 cm. Includes index Bibliography : p. 113 346 346 Subjects--Topical Terms: Differential equations--theory. Dewey Class. No.: 517.38 / B919t