Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Saunders, J. L., J. K. Knoke, and D. M. Norris. 1967. Insect-host tissue interrelations between Xyleborus ferrugineus (Coleoptera: Scolytidae) and Theobroma cacao in Costa Rica . Entomological Society of America, Annals 60:419-423.