00569nam a2200217 a 450000100080000000500110000800800410001910000300006024500460009026000480013630000090018449000570019365000110025065000120026165000130027365000130028665000180029965000120031765300130032965300090034212645451993-12-09       1936    bl uuuu     u0uu1 u    #d1 aSMITH, H. P. BYROM, M. H.  aCalibration of cotton plantng mechanisms.  aTexas:Agricultural Experiment Stationc1936  a32p.  a(Texas Agricultural Experiment Station Bulletin,526)  acotton  ahistory  aAlgodão  aHistoria  aMecanização  aSemente  aAgricola  aSeed