00407nam a2200145 a 450000100080000000500110000800800410001910000170006024500770007726000470015430000100020149000260021165000090023770000150024619487552013-03-14       1970    bl uuuu     u0uu1 u    #d1 aKEOGH, J. L.  aSoybean fertilizationbTiming and placement of phosphorus and potassium.  aFayetteville: University of Arkansasc1970  a17 p.  a(Report Series, 185).  aSoja1 aMAPLES, R.