Kohl, Benjamin Protected horticultural systems in the Bolivian Anders : a case study of NGOs and inappropriate technology / Benjamin Kohl - London : ODI , 1991 - 30p. : ill. ; 15 cm. - AAU. Research and Extension Network Paper No. 29 . Includes bibliographical references and index. Subjects--Topical Terms: HorticultureCase studies Gov. Doc. Class. No.: GB ODI AAU NP-29