00385nam a2200145Ia 4500008004100000082001300041100001700054245003200071250001200103260003400115300001000149490003700159600001500196650002800211140224s9999    xx            000 0 und d  a51:63 J4  aMc Gee, R.V.  aMathematics in agriculture.  a2nd ed.  aNew YorkbPrentice Hallc1954  a208p.  aPrentice-Hall Mathematics Series  aR.V.Mc Gee  aMathematics,Agriculture