Kossoff, P., Hernández, F., Vekoh-Pardo, M. V. and Zimmerman, M. (1989) “Urban helminthiasis in two socioeconomically distinct Costa Rican communities”, Revista de Biología Tropical, 37(2), pp. 181–186. Available at: https://revistas.ucr.ac.cr/index.php/rbt/article/view/23571 (Accessed: 30November2024).