00309nam a2200133 a 450000100080000000500110000800800410001910000150006024500320007526000280010730000100013565300150014565300150016010198172018-04-05       1975    bl uuuu     u0uu1 u    #d1 aVILELA, H.  aNitrogenio para ruminantes.  aBrasilia: CONDEPEc1975  a30 p.  aNitrogenio  aRuminantes