00369nam a22001097a 4500008004100000020002100041082002300062245008000085260004000165300003400205500002000239190120b        xxu||||| |||| 00| 0 eng d  a978-1-6894-903-2  aCir.515.35bc2018.  aTheory, practice and techniques in differential equations /c3G E- learning  aNew York :b3G E- learning,cc2018.  aix, 223 p. : bill. ;c23 cm.  aIncludes index.