000 00321nam a2200121Ia 4500
082 _a510
_bOPD
245 _aDifferential equations I
_bmathematics foundation course unit 24
260 _aBlethchley Bucks:
_bOpen University Press,
_c1971.
300 _b36p.
546 _aeng
650 _aMathematics
_9203211
942 _cBK
999 _c81395
_d81395