000 00473nam a22001937a 4500
015 _a3813
016 _a517.91 PIA
020 _a0713508515
080 _a517.91
_bPIA
100 _aPiaggio, H.T.H.
245 _aDiffrential equations
_band their applications
260 _aG. bell and sons, ltd
_bLondon
_c1971
300 _a256p.
_bfig.
700 _aGeetha
852 _a1L1-1
999 _c1227
_d1227