]
(1991). Difilobotriasis en salmónidos introducidos en lagos del sur de Chile. Aspectos patológicos, relación con infección humana, animales domésticos y aves piscivoras.
Archivos de Medicina Veterinaria. 23, pp. 165–183.
(1991). Diphyllobohtirum sp. infections in freshwater reared Atlantic salmon (Salmo salar L.).
Aquaculture. 95, pp. 7–14.
(1991). Diphyllobothriasis: fish tapeworm disease in the curcumpolar north.
Arctic medical research. 50, pp. 18–25.
(1991). Direct Polymerase Chain-Reaction Test for Detection of Helicobacter-Pylori in Humans and Animals.
Journal of Clinical Microbiology. 29, pp. 2543–2549.
(1991). Direct Polymerase Chain-Reaction Test for Detection of Helicobacter-Pylori in Humans and Animals.
Journal of Clinical Microbiology. 29, pp. 2543–2549.
(1991). Distomatosis hepatica en el Peru.
Epidemiologia y control 2da edicion. Universidad Nacional Mayor de San Marcos, Lima.
(1991). Distribution and survival of motile Aeromonas spp. in brackish water receiving sewage treatment effluent.
Applied Environmental Microbiology. 57, pp. 2459-2467.
(1991). Distribution of Giardia cysts in wastewater.
Water Science and Technology. 24, pp. 187–192.
(1991). Effect of relative humidity and air temperature on survival of hepatitis A virus on environmental surfaces.
Applied and Environmental Microbiology. 57, pp. 1394-9.
(1991). Effect of vaccination with a monovalent Leptospira interrogans serovar hardjo type hardjo-bovis vaccine on type hardjo-bovis infection of cattle.
Am J Vet Res.Am J Vet Res.. 52, pp. 1639-1643.
(1991). Effects of improved water supply and sanitation on ascariasis, diarrhoea, dracunculiasis, hookworm infection, schistosomiasis, and trachoma.
Bulletin of the World Health organization. 69, pp. 609.
(1991). Effects of improved water supply and sanitation on ascariasis, diarrhoea, dracunculiasis, hookworm infection, schistosomiasis, and trachoma.
Bulletin of the World Health Organization. 69, pp. 609–621.
(1991). Effects of improved water supply and sanitation on ascariasis, diarrhoea, dracunculiasis, hookworm infection, schistosomiasis, and trachoma.
Bulletin of the World Health Organization. 69, pp. 609.
(1991). Enquete sur la Distomatose a Fasciola hepatica en Corse.
Medit Med Marseille. 403, pp. 21-25.
(1991). Environmental spread of Vibrio cholerae in Peru.
Lancet. 338, pp. 1216–1217.
(1991). Epidemiologic study and control of Taenia solium infections with praziquantel in a rural village of Mexico.
The American journal of tropical medicine and hygiene. 45, pp. 522-531.
(1991). Epidemiology of Salmonella typhimurium infection in calves: persistence of salmonellae on calf units.
Veterinary RecordVeterinary Record. 29, pp. 461-462.
(1991). Evaluation of an Escherichia coli host strain for enumeration of F male-specific bacteriophages.
Applied and Environmental Microbiology. 57, pp. 1301–5.
(1991). Evidence for the segregation of a major gene in human susceptibility/resistance to infection by Schistosoma mansoni.
American Journal of Human Genetics. 48, pp. 959-70.
(1991). A family outbreak of gastroenteritis caused by group C rotavirus.
Archives of Virology. springer. doi: 10.1007/BF01309808.
(1991). Fate of viruses in treated sewage effluent during soil aquifer treatment designed for wastewater reclamation and reuse.
Water Science and Technology. 24, pp. 95–102.
(1991). Financial dimensions of local lake management: A case study of the Yahara watershed lakes.
The University of Wisconsin - Madison. Ann Arbor.
(1991). Focos de transmision de Fasciola hepatica en Corcega: distintos tipos y sus relaciones con la Fascioliasis humana durante el periodo 1984-1990.
(al., M-C.S. et, ed.). Parasitologia en el Sur-Oeste de Europa , Aguilar S.L., Valencia.
(1991). Fulminant amebic colitis.
World Journal of Surgery. 15, pp. 216–221.
(1991). Giardia and Cryptosporidium spp. in filtered drinking water supplies.
Applied and Environmental Microbiology. 1991/09/01 ed.57, pp. 2617-21.