000 nam a22 7a 4500
999 _c7686
_d7686
008 170928b xxu||||| |||| 00| 0 eng d
100 _aPrakashan Kamal
_94175
245 _aMathgematics based on N. C. E. R. T Text Books
260 _aNew Delhi
_bPrabhakasan Kamal