00334    a2200121   4500020001500000082001600015100001700031245005200048260004000100300002300140650002700163700002200190  a0824786378  a515.35bBIL  aBiler, Piotr  aProblems and examples in differential equations  aNew YorkbMarcel Dekkerc1992g1992  aviii, 244p.c23cm.  aDifferential equations  aNadzieja, Tadeusz