00622nam a2200205Ia 4500003000400000008004100004020001500045082001400060100002000074245010000094250001200194260004800206300001400254650003400268650004100302650001600343650001400359700002300373700002000396OSt170901s1976    xx            000 0 und d  a0023767200  a633bM39P  aMartin, John H. 0aPrinciples of Field Crop Production / cby John H. Martin, Warren H. Leonard and David L. Stamp  a3rd ed.  a.- New Yorkb: Macmillan Publishingc, 1976  axi,1118p.  aTechnology (Applied Sciences)  aAgriculture and Related Technologies  aField Crops  aBook Bank  aLeonard, Warren H.  aStamp, David L.