00346nam 2209782 45000010005000000030023000050050009000280080041000371000023000782600040001015000033001413000013001742450027001879782StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  aConsultants Bureau bNew York: Consultants Bureau c1990 aIts Translated from Russian. a399-692p aDifferential Equations