The impact of organophosphate insecticides on birds

by Vega, Sileny
Published 1992

Does vitamin A prevent smokers from developing lung cancer?

by Vega, Sileny
Published 1982

Limitations in the definition and application of international standards of occupational exposure to toxic agents in the industry

by Vega, Sileny
Published 1980

Notes on the toxicology of pesticides used in tropical crops

by Vega, Sileny
Published 1994

Pesticides for restricted use in the United States are freely imported into Costa Rica

by Vega, Sileny, Maroto, Irma M.
Published 1984

The importance of pesticides in Costa Rica during 1980-1981

by Zúñiga, Claudia, Vega, Sileny, Monge, Rodrigo
Published 1984