How can one select the air to breathe?

por Alfaro, María del Rosario
Publicado 1991

Alcohol from wood.Another alternative to the alcoholic problem?

por Dórmond, Rónald, Sánchez, Juan Carlos
Publicado 1984

The importance of pesticides in Costa Rica during 1980-1981

por Zúñiga, Claudia, Vega, Sileny, Monge, Rodrigo
Publicado 1984

Current status of agricultural pest control in Costa Rica

por Hilje Quirós, Luko
Publicado 1984

A system of private biological reserves for Costa Rica

por Chaverri, Adelaila
Publicado 1984

Pesticides: Its impact on the environment and public health

por Sánchez, Juan Carlos
Publicado 1984

Pesticide poisoning. Training manual for health personnel

por Zúñiga, Claudia
Publicado 1984

Manual for the identification of pesticides registered in Costa Rica

por Maroto, Irma M.
Publicado 1984

Mobility of herbicides in volcanic soils of Costa Rica

por Montes de Oca, Paulina
Publicado 1982

Does vitamin A prevent smokers from developing lung cancer?

por Vega, Sileny
Publicado 1982

Reflections on underdevelopment: Malnutrition in Latin America

por Chávez, Rónald
Publicado 1982

Light strips: arboriculture in parallel 10

por Vargas Mena, Emilio
Publicado 1982

Justification and possibilities of rapprochement between traditional medicine and official medicine

por Sepúlveda, Jaime
Publicado 1982

Is the global strategy for conservation an answer to the ecological challenge?

por Rodríguez, Silvia
Publicado 1981

Plants: energy hope

por Miller, William D., Hillen, L.W., Alium, Paulo de T., Calvin, Melvin, Calvin, Gene E., Aragao Craveiro, Afranio
Publicado 1981

Forest development in Costa Rica (Empirical bases for study)

por Vargas Vega, Emilio
Publicado 1980

Brief notes for a critique of "National Parks"

por Mora Castellanos, Eduardo
Publicado 1980

Introduction to a political ecology. Environment and nuclear power plants

por Vargas, Emilio
Publicado 1980

The difference between conserving and rationally utilizing the resources of the sea

por Ramírez, Arnulfo
Publicado 1980

Impact on the forest sector of payment of environmental services

por Sáenz, Alexandra
Publicado 2000