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16721
Field experiment for the study of a peasant practice: The papaya piloneo (Carica papaya L.)
by Baraona, Marcia
Published 1984
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16722
Poás and Irazú: Parks without the poor
by Mora Castellanos, Eduardo
Published 1984
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16723
Oak defoliation by larvae of Dirphiosis flora (Lepidoptera: Saturniidae) in Loma Larga de Cartago, Costa Rica
by Chaverri, Adelaila
Published 1984
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16724
Introductory notes to the study of scientific and technological development planning problems
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16725
Towards an epistemo-methodological proposal for the study of environmental phenomena (preliminary)
by Mora Castellanos, Eduardo
Published 1984
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16726
Current status of agricultural pest control in Costa Rica
by Hilje Quirós, Luko
Published 1984
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16727
Pesticides for restricted use in the United States are freely imported into Costa Rica
by Vega, Sileny, Maroto, Irma M.
Published 1984
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16728
Test of the behavior of eleven forest species at Coope-Sierra Cantillo Cooperative in Palmar Norte, South Zone of Costa Rica
by Rodríguez, Dora, Fonseca, William
Published 1984
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16729
A system of private biological reserves for Costa Rica
by Chaverri, Adelaila
Published 1984
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16730
Pesticides: Its impact on the environment and public health
by Sánchez, Juan Carlos
Published 1984
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16731
Pesticide poisoning. Training manual for health personnel
by Zúñiga, Claudia
Published 1984
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16732
Manual for the identification of pesticides registered in Costa Rica
by Maroto, Irma M.
Published 1984
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16733
Use of genetic resources of tropical forests
by Zeaser, Dónald
Published 1982
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16734
Mobility of herbicides in volcanic soils of Costa Rica
by Montes de Oca, Paulina
Published 1982
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16735
Wastewater soil treatment
by Cervantes, Carlos A.
Published 1982
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16736
Some thoughts on the notion of integrated control
by Benzekri, Pierre
Published 1982
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16737
Does vitamin A prevent smokers from developing lung cancer?
by Vega, Sileny
Published 1982
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16738
Agroforestry systems
by Salas, José Luis
Published 1982
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16739
Reflections on underdevelopment: Malnutrition in Latin America
by Chávez, Rónald
Published 1982
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16740
Biological indicators of air pollution
by Castillo, Luisa
Published 1982
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