Artículos
Wujek, Daniel E.. "Ultrastructure and taxonomy of Oscillatoria pilicola, a new ..." (1-6-)
Gonzales, Rigoberto. "La Familia Centrarchidae (Pisces : Perciformes) en la Repúbl..." (7-14-)
Morera Brenes, Bernal. "Parturition in Onychoporans : new record and review" (15-20-)
Laurito Mora, César . "Sinopsis de la estratigrafica de la cuenca Barranca - Herrad..." (21-32-)
Jiménez, Jorge A.. "Floral and fruiting phenology of trees in a mangrove forest ..." (33-50-)
Holzenthal, Ralph W.. "Catálogo sistemático de los Trichópteros de Costa Rica (Inse..." (51-82-)
Skutch, Alexander F.. "Synchronized flowering and seed dispersal in Miconia" (83-94-)
Greene, Harry W.. "Orthogeomys underwoodi (Rodentia, Geomyidae) on the Osa Peni..." (95-99-)
Lippold, Lois K.. "A Census of primates in Cabo Blanco Absolute Nature Reserve,..." (101-105-)
Jiron Porras, Luis Fernando. "Updated checklist of assasin bug species (Hemiptera : Reduvi..." (107-113-)
Ramírez B., William. "A Reply to Lawton's paper on Ficus crassiuscula Warb. as a s..." (115-116-)