00538nam a2200169 a 450000100080000000500110000800800410001910000220006024501190008226000400020165000160024165300350025765300250029270000180031770000170033570000160035216582072011-10-28       2009    bl uuuu     u00u1 u    #d1 aSOUZA, G. da S. e  aUsing stochastic frontier approach to assess technical efficiency in Brazilian agriculture.h[electronic resource]  aIn: TROPENTAG, 2009, Hamburg.c2009  aagriculture  aStochastic frontier production  aTechnical efficiency1 aWANDER, A. E.1 aGOMES, E. G.1 aGAZZOLA, R.