00258nam a22000977a 4500008004100000020002200041100002600063245003800089260002500127300000800152250908b        |||||||| |||| 00| 0 eng d  a978-93-5367-886-9  aP. Gupta & G. Khatoon  aBusiness Mathematics & Statistics  aNew DelhibHPHc2020  a450