Collectivité auteur : IRRI, International rice research institute 4 Métadonnées 23 rd Asian rice farming systems working group meeting, 12-17 october 1992 Cantho, Vietnam. 1992. Impact of science on rice. Titre de la série : The international rice research institute. 1985. Internation Rice Research Notes . 1998. Proceedings of the planning workshops on ecosystems analysis for extrapolation of agricultural technologies Taguegarao, Cagayan, Philippines, May 22-25, 1990. 1990.