000 00315nam a22001097a 4500
008 230905b |||||||| |||| 00| 0 eng d
022 _a0012-2661
040 _aNational Science Library
_cNational Science Library
245 _aDifferential equations
260 _aNew York:
_bConsultants Bureau,
_c1965
942 _cCR
999 _c60345
_d60345