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Farm level data on various aspects of household's socio - economic variables , production systems and land use , and the costs and benefits of agricultural crops and agroforestry systems were collected from the selected farmers through ... | |
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In Workshop AgroForestry Systems in Latin America , Turrialba , Costa Rica , 1979 . Proceedings . Ed . by G. De Las Salas . Turrialba , Costa Rica , CATIE . pp . 177-183 . GONZALEZ , L. E. 1980. Efecto de la asociación de laurel ... | |
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