00422nam a2200145Ia 4500001000500000005001700005008004100022020001500063082001400078100002100092245009000113250001200203260004900215650001200264149020261006003535.0120911s9999    xx            000 0 und d  a0534142087  a512.9 JOH  aJohnston, C. L.   aDevelopmental mathematics / C.L. Johnston, Aldene T. Willis, Gale M. Hughes.- 3rd ed.  a3rd ed.  aBelmont, Calif. : Wadsworth Pub. Co., c1991.  aAlgebra