(1981). Endemicity of toxoplasmosis in Costa Rica.
American Journal of Epidemiology. 113, pp. 254–269.
(1981). Environmental sanitation infection and nutritional status of infants in rural St. Lucia, West Indies.
Transactions of the Royal Society of Tropical Medicine and Hygiene. 75, pp. 507–513. doi: 10.1016/0035-9203(81)90187-5.
(1981). Epidemiology and Pathogenesis of Zoonotic Toxocariasis.
Epidemiologic Reviews. 3, pp. 230–250. doi: 10.1093/oxfordjournals.epirev.a036235.
(1981). Experimental Infection by Waterborne Enteroviruses.
Journal of Food Protection. 44, pp. 861-865. doi: 10.4315/0362-028x-44.11.861.
(1981). Fascioliasis in Puerto Rico: A review.
Bol Asoc Med Puerto Rico. 73, pp. 94-101.
(1981). Hatching mechanisms of nematodes.
Parasitology. 83, pp. 435–449. doi: 10.1017/S0031182000085413.
(1981). Helminths in the induction of cancer II. Schistosoma haematobium and bladder cancer.
Tropical and geographical medicine. 33, pp. 1-7.
(1981). Infective dose of Campylobacter jejuni in milk.
BMJ. 282, pp. 1584.
(1981). Investigaciones sobre Pseudophyllidea (Carus, 1813) en el sur de Chile. VIII Desarrollo experimental de Diphyllobothrium dendriticum Nitzch en Larus maculipennis Lichtenstein.
Boletin Chileno de Parasitologia. 36, pp. 74–75.
(1981). Mechanism of enteroviral inactivation by ozone.
Applied and Environmental Microbiology. 41, pp. 718-23.
(1981). Morphological observation of Diphyllobothrium pacificum (Nybelin, 1931) Margolis, 1956 from fur seals, Callorhynus ursinus in Japan.
Yοnago Acta Medica. 25, pp. 69–79.
(1981). The Norway rat as a selective chronic carrier of Leptospira icterohaemorrhagiae.
J Wildl DisJ Wildl DisJ Wildl Dis. 17, pp. 39-43.
(1981). The occurrence and significance to animal health of Leptospira, Mycobacterium, Escherichia coli, Brucella abortus and Bacillus anthracis in sewage and sewage sludges.
J Hyg (Lond)J Hyg (Lond)J Hyg (Lond). 1981/02/01 ed.86, pp. 129-37.
(1981). Occurrence of Vibrio cholerae serotype O1 in Maryland and Louisiana estuaries.
Applied and Environmental Microbiology. 41, pp. 555–558.
(1981). One-year survey of enteroviruses, adenoviruses, and reoviruses isolated from effluent at an activated-sludge purification plant.
Appl Environ Microbiol. 41, pp. 51-9.
(1981). Parasite ova in anaerobically digested sludge.
Journal (Water Pollution Control Federation). 53, pp. 1334–1338.
(1981). Parasites in southern sludges and disinfection by standard sludge treatment.
USEPA. pp. 82-1023.
(1981). A preliminary field trial to evaluate the use of immunisation for the control of naturally acquired Taenia saginata infection in cattle.
Research in veterinary science. 30, pp. 104-108.
(1981). Process Design Manual for Land Treatment of Municipal Wastewater EPA 625/1-81-013.
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(1981). Proliferating larval cestode in a man in Paraguay: a case report and review.
American Journal of Tropical Medicine and Hygiene. 30, pp. 625–637.
(1981). Quantitative procedure for enumeration of bifidobacteria.
Applied and Environmental Microbiology. 42, pp. 427–432.
(1981). Recent progress in studies of Paragonimus and paragonimiasis control in China.
Chinese Medical Journal. 94, pp. 483–494.
(1981). Recovery of indigenous enteroviruses from raw and digested sewage sludges.
Applied and Environmental Microbiology. 42, pp. 1023-8.
(1981). Recovery of indigenous enteroviruses from raw and digested sewage sludges.
Appl Environ Microbiol. 42, pp. 1023–8.
(1981). Researches on Pseudophyllidea (Carus,1813) in the south of Chile. IV: Occurrence of Diphyllobothrium dendriticum (Nitzsch).
Journal of Helminthology. 55, pp. 173–188.
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