000 00283nam a2200121Ia 4500
008 221001s1962 xx 000 0 eng d
082 _a515.43 RAY
100 _aRay, M.
245 0 _aIntegral calculas
260 _aAgra
_bStudents' Friends
_c1962
300 _a338p.
942 _2ddc
_cBK
999 _c4293
_d4293