000 00276nam a2200121Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _a"Ray R N ,mitra"
245 0 _aScience For Middle Schools
260 _bNcert
_c1968
300 _a151p
650 _aPhysics
942 _cBK
999 _c32761
_d32761