Ayres, Frank . Theory and problems of differntial equations : in si metric units / by Frank Ayres. - Singapore : McGraw-Hill Book , 1981. - 295p. : Diagrams ; 26cm . - Schaums outline series, NULL NULL; . - Schaums outline series, NULL NULL; . Includes index ISBN: 0070990069 NULL Subjects--Index Terms: DIFFERNTIAL EQUATIONS Dewey Class. No.: 515.35 / AYR/T