000 00239nam a2200097Ia 4500
008 150310s9999 xx 000 0 und d
100 _aNARAYAN S
245 _aDIFFERENTIAL EQUATIONS
250 _a7
260 _c1973
_b"S, VISWANATHAN, MADRAS"
999 _c6404
_d6404