00421nam a2200121Ia 4500008004100000082002400041100001800065245003000083260004400113300001300157600001700170650011200187140224s9999    xx            000 0 und d  a633.002:65.011.4 L7  aRae, Allan N.  aCrop management economics  aLondonbCrosby Lockwood Staplescc 1977  axi,525p.  aAllan N. Rae  aCrop-manageent-economic aspects,Decision making-agricultural aspects,Program budgeting-agricultural aspects