00519naa a2200169 a 450000100080000000500110000800800410001910000200006024500700008026000090015065000170015965300270017670000150020370000190021870000180023777300940025512746162006-11-29       2006    bl uuuu     u00u1 u    #d1 aSOUZA, E. G. de  aUsing a field radiometer to estimate instantaneous sky clearness.  c2006  aMeteorologia  aClimatologia Agrícola1 aSCHARF, P.1 aSUDDUTH, K. A.1 aHIPPLE, J. D.  tRevista Brasileira de Engenharia Agrícola e Ambientalgv.10, n.2,abr./jun.,369-373,2006.