Towards integrated control of cotton pests in Guatemala : an economic analysis /

by Pira, Lars Henrik, Pira, Lars Henrik
Published 1981

Analisis de las etapas del ciclo de un proyecto /

by Fuentes Mohr, Fernando, Fuentes Mohr, Fernando, Pira, Lars Henrik
Published 1989

Central America : crisis and possibilities /

by Bulmer Thomas, Victor 1948-, Crawley, Eduardo, Domínguez Reyes, Edme, Durán, Esperanza, Fuentes Knight, Juan Alberto, García, Rigoberto, Goñi, José, Gutiérrez Espeleta, Édgar E., Hamilton, Nora 1935-, Jonas, Susanne Leilani 1941-, López, José Roberto, Pira, Lars Henrik, Vylder, Stefan de
Published 1988