00498naa a2200169 a 450000100080000000500110000800800410001910000210006024500680008126000090014965300200015865300160017865300180019465300140021270000170022677300850024310849632012-05-14       2004    bl uuuu     u00u1 u    #d1 aTEGTMEIER, E. M.  aExternal costs of agricultural production in the united states.  c2004  aAdverse effects  aAgriculture  aExternalities  aValuation1 aDUFFY, M. D.  tInternational Journal of Agricultural Sustainabilitygv. 2, n. 1, p. 1-20, 2004.