000 00271nam a2200109Ia 4500
100 _aMamoria, C B & Kamat, G S
942 _cBK
245 _aCo-operation : theory and practice for std. xi
260 _aKitab mahal, Allahabad
_c1975
082 _a334 Mam/Kam
300 _a232
999 _c9626
_d9626