00336nam a2200145Ia 4500008004100000041000800041100001600049245003400065260002700099300000900126520001200135520001500147650000900162999001900171230605s1998    xx            000 0 und d  aeng  aKhanna O.P.  aWork study motion & time stdy  bDhanpat Rai pub.c1998  a337p  aGeneral  aHard Board  aM.M.  c420463d420463