000 00319nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c230/-
040 _aET
100 _aPATHAK H.K
245 0 _aDIFFERENTIAL EQUATIONS
260 _bSAHITYA BHAWA PUB.
_aMEERUT
300 _a496
500 _a35739
942 _cBK
999 _c41754
_d41754