00383nam 2228281 450000100060000000300230000600500090002900800410003808200080007907200350008702000180012210000220014026000240016225000060018624500350019228281StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a515 adifferential equations partial a0-07-017897-6 aDavid W. Zachmann bMCGRAW. HILL c1986 a3 apartial differential equations