Harwood, Richard R. Small farm development; understanding and improving farming systems in the humid tropics - Boulder, Colo : Westview, 1979 - 160 p. : ilus. ; gráfs. - IADS development-oriented literature series . - IADS development oriented literature series . LCCN: 12175 Subjects--Topical Terms: Agricultura--Trópicos. Dewey Class. No.: 631.0913 / H3