TY - JOUR T1 - Pacta sunt servanda versus the social role of contracts: the case of Brazilian agriculture contracts JO - Revista de Economia e Sociologia Rural A1 - Rezende, Christiane Leles A1 - Zylbersztajn, Decio SN - 0103-2003 UL - 10.1590/S0103-20032012000200001 VL - 50 Y1 - 2012 PB - Brasil ER -