00442nam a2200169 a 450000100080000000500110000800800410001910000200006024500730008026000330015330000100018649000210019665000130021765000090023070000180023970000150025720888352018-03-08       1975    bl uuuu     u0uu1 u    #d1 aBOUTWELL, W. A.  aCompetition between soybeans and other crops in major U. S. regions.  aWashington D. C.: USDAc1975  a11 p.  a(USDA. ERS-588).  aSoybeans  aSoja1 aHARRIS, H. M.1 aKENYON, D.