00310nam a2200121Ia 4500008004000000082001600040100001800056245003200074250000500106260004000111300001100151650002600162210210b1991   xxu||||| |||| 00| 0 eng d  a515.33 KHAD  aKHANNA (M L).  aDifferential calculus.Ed.18  a  aMeerutbJai Prakash Nath & Coc1991  axx,560  aDifferential calculus