Worshop agro-forestry system in Latin America Turrialba, Costa Rica March 26-30, 1979. - Tokyo : United Nations University (UNU) , 1986 - iv, 220p. : ill. ; 30 cm. Includes bibliographical references. Subjects--Topical Terms: Agro-forestry system--Latin Ame Gov. Doc. Class. No.: UN Uni Conf.1979 Wor.