Soil management in Tropical America - Bornemisza Steiner, Elemer; Alvarado Hernández, Alfredo 1945- (Published on behalf of the University Consortium on Soils of the Tropics by the Soil Science Dept., North Carolina State University, 1975)
¨Proceedings of a Seminar held at CIAT, Cali, Colombia, February 10-14, 1974"--Co-sponsored by: University Consortium on Soils of the Tropics, Centro Internacional de Agricultura Tropical, U.S. Agency for International Development, Socedad Colmbana de la Ciencia del Suelo, Socedad Latinoamericana de la Ciencia del Suelo"