00234nam a2200097Ia 4500008004100000041000800041100002200049245003700071260000900108999001900117230508s1989    xx            000 0 und d  aeng  aWALVALKAR & DHADE  aPOLYTECHNIC MATHEMATICS F.Y.DIP.  c1989  c728699d728699