000			00421nam a2200133Ia 4500
008			211109s9999||||xx |||||||||||||| ||und||
082			_a515.35 _bPET-L
100			_aPetrovsky [i G],
245		0	_aLectures On Practical Differential Equations Tr From Russian By A S
260			_bNATIONAL BOOKSTALL _aKottayam _c1962
630			_xGeneral Stack
650			_aDIFFERENTIAL EQUATIONS _vMATHEMATICS _xGeneralia
942			_cBOOK
999			_c24669 _d24669