TY - JOUR AU - J Frenkel AU - J Frenkel AU - M Chinchilla BT - The American Society of Tropical Medicine and Hygiene LA - eng PY - 1975 SE - pp. 439-443 T2 - The American Society of Tropical Medicine and Hygiene TI - Soil survival of toxoplasma oocysts in Kansas and Costa Rica VL - 24 ER -