]
(1991). Comparison between semisolid Rappaport and modified semisolid Rappaport-Vassiliadis media for the isolation of Salmonella spp. from foods and feeds.
Int J Food MicrobiolInt J Food Microbiol. 14, pp. 51-7.
(1991). Comparison of cloth, paper, and warm air drying in eliminating viruses and bacteria from washed hands.
(1991). Comparison of the survival of Campylobacter jejuni and Campylobacter coli in culturable form in surface water.
Canadian Journal of Microbiology. 37, pp. 530-533.
(1991). Cost recovery and local resource mobilization in irrigation systems in Nepal: Three case studies from the Rapti zone.
Syracuse University. Ann Arbor.
(1991). Current status of Food-borne parasitic zoonoses in Japan.
Southeast Asian Journal of Tropical Medicine and Public Health. 22, pp. 48–53.
(1991). A cyst-like stage of Blastocystis hominis.
International Journal for Parasitology. 21, pp. 613–615.
(1991). The daily cercarial emission rhythm of Schistosoma margrebowiei with particular reference to dark period stimuli.
J Helminthol. 65, pp. 159-68.
(1991). Decentralizing water supply services in developing countries: factors affecting the success of community management.
Public administration and development. 11, pp. 415–430.
(1991). Determining Giardiasis prevalence by examination of sewage.
Water Science and Technology. 24, pp. 173–178.
(1991). Diagnosis of human schistosomiasis by detection of circulating cathodic antigen with a monoclonal antibody.
J Infect Dis. 164, pp. 1010-3.
(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.