Collective action, property rights, and devolution of natural resource management exchane of knowledge and implications for policy : proceedings of t he International Conferende held from 21-25 June, 1999 in Puerto Azul, The Philippines - Mainzen-Dick, Ruth Suseela; Knox, Anna; Di Gregorio, Monica (Zentralstelle fur Ernahrung und Landwirtschaft, Deutsche Stiftung fur internationale Entwicklung, 2001)