00500naa a2200169 a 450000100080000000500110000800800410001910000190006024500490007926000090012865000160013765300220015365300190017570000220019470000180021677300960023418340012010-01-10       1980    bl ---       0--  u    #d1 aRUFFING, B. J.  aNitrogen for malting barley Hordeum vulgare.  c1980  aNitrogênio  aCevada cervejeira  aFertilização1 aWESTERMANN, D. T.1 aJENSEN, M. E.  tCommunications in Soil Science and Plant Analysis, New Yorkgv. 11, n. 9, p. 889-894, 1980.