J. B. Friday: CATIE, Centro Agronómico Tropical de Investigación y Enseñanza
J. B. Friday: Forest tree seed storage in a controlled climate room at CATIE
J. B. Friday: Gmelina arborea seed CATIE
J. B. Friday: Tectona grandis seed CATIE
J. B. Friday: Swietenia mahagoni seed CATIE
J. B. Friday: Swietenia macrophylla seed CATIE
J. B. Friday: Tectona grandis seed CATIE
J. B. Friday: forest tree seed instructions CATIE
J. B. Friday: Erythrina mulch under coffee plantations
J. B. Friday: Erythrina poeppigiana leaves and flowers
J. B. Friday: Erythrina poeppigiana coffee shade trees
J. B. Friday: coffee shade trees at CATIE
J. B. Friday: coffee shade trials
J. B. Friday: coffee shade trials at CATIE
J. B. Friday: Erythrina fusca flower and leaves
J. B. Friday: Erythrina fusca living fence
J. B. Friday: Bursera simaruba bark