00555nam a2200205 a 450000100080000000500110000800800410001910000170006024500800007726000270015730000080018449000370019265000110022965000140024065000150025470000180026970000230028770000200031070000190033015609111997-05-05       1958    bl uuuu     u0uu1 u    #d1 aCLARK, R. T.  aProduction factors in range cattle; under Northern great plains conditions.  aWashington: USDAc1958  a22p  a(USDA. Technical Buletin, 1181).  aBovino  aPecuária  aProdução1 aSHELBY, C. E.1 aQUESENBERAY, J. R.1 aWOODWARD, R. R.1 aWILLSON, F. S.