000 00269nam a2200109Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aGupta R K & Arya J P
245 0 _aIit Mathematics
260 _bKrishna Prakasan Mandir
_c1997
300 _a2306p
942 _cREF
999 _c36391
_d36391