00305nam a2200097Ia 4500008004100000082005200041100003300093245004000126260003300166300000800199140113s9999    xx            000 0 und d  a"631.559.2.001.5(-77)""1979.4.25""(082.2)   M0"  a"Staples, R.C. & Kuhr, R.J."  aLinking Research to crop production  a1980bPlenum PresscNew York  a235