00435nam a22001457a 4500 0070990069 515.3 AYR L-1, P-48 Ayres, Frank 8744 Thoery and problems of differential equations in si metric units / Frank, Ayres. New Delhi : McGraw Hill Company, 1981. 295 p. : 0 0 0 515_300000000000000_AYR MCE 379 ddc BK 546681 546681 0 0 ddc 0 0 MCE MCE 2014-06-17 0 515.3 AYR MCE-16082 2014-06-17 2014-06-17 BK