Family planning and family size determination Auteur(s) : Carvajal, Manuel J., 1946- Geithman, David T., 1938- ( joint author ) | Partager |
Evaluacion de aceptabilidad para el cultivo del trigo, Quezaltenango, 1978-1979 Auteur(s) : Calderon, Sandra. Instituto de Ciencia y Tecnologia Agricolas (Guatemala) | Partager |
Evaluaciâon de la aceptabilidad sobre fertilizaciâon en brâocoli, Chimaltenango y Sacatepâequez, 1987 Auteur(s) : Garcâia R., Santos Instituto de Ciencia y Tecnologâia Agrâicolas (Guatemala) | Partager |
Study of soil characteristics as developed in a grass mulch system of vegetable cultivation in Jamaica Auteur(s) : Davis, Malcolm S | Partager |
Treatment design for fertilizer use experimentation Auteur(s) : Cady, Foster B., 1931- Laird, Reggie J International Maize and Wheat Improvement Center | Partager |
Efecto de la interacción cero lebranza Auteur(s) : Pérez, Carlos N Dardón, Marco A Córdova, Hugo S | Partager |
Factors affecting fertility of selected brown sand soils of Guyana Auteur(s) : Downer, Alfred Victor, 1937- | Partager |
FertilizacioÌn de variadades de maiÌz para Chimaltenango Auteur(s) : Del Valle, Ricardo Fuentes, David E Chew, Francisco Instituto de Ciencia y TecnologiÌa AgriÌcolas (Guatemala) | Partager |
Dry-weather vegetable farming using Guinea grass mulch Auteur(s) : Davis, Malcolm S Davis, Patricia D | Partager |