00327nam a2200145Ia 4500008004100000041000800041082001300049100002100062245002600083250000600109260003300115300001400148365000700162650001200169210719s1953    xx            000 0 und d  aeng  a512 HARC  aHART (William L)  aCollege algebra. Ed.4  a4  aBostonbD C Heath & Coc1953  ax,480bHB  cRs  aAlgebra