]
(1991). Non conventional sewerage in developing countries.
Loughborough University (United Kingdom). Ann Arbor.
(1991). The nutritional impact of an integrated rural development project in Haiti: A quasi-experimental study.
Cornell University. Ann Arbor.
(1991). Occurrence of Blastocystis sp. in pigs.
Folia Parasitologica. 38, pp. 297–301.
(1991). Occurrence of Giardia and Cryptosporidium spp. in surface water supplies.
Applied and Environmental Microbiology. 57, pp. 2610–2616.
(1991). Oral immunisation against typhoid fever in Indonesia with Ty21a vaccine.
LancetLancet. 1991/10/26 ed.338, pp. 1055-9.
(1991). Parásitos intestinales del tepezcuinte, Agouti paca (Rodentia: Dasyproctidae) en Costa Rica.
Revista de Biología Tropical. 39, pp. 173-176.
(1991). Parasitoses intestinales chez les habitants d´un archipel Equatorien.
Bulletin of the Scandinavian Society for Parasitology. 9, pp. 219–223.
(1991). Poliomyelitis in Oman.
Lancet. 338, pp. 1330–1.
(1991). Poliomyelitis in Oman.
Lancet. 338, pp. 1330–1.
(1991). Prediction of nearshore currents using a second-order turbulence model.
University of Michigan. Ann Arbor.
(1991). Prevention of surface-to-human transmission of rotaviruses by treatment with disinfectant spray.
Journal of clinical microbiology. 29, pp. 1991–1996.
(1991). Protection of gerbils from amebic liver abscess by immunization with the galactose-specific adherence lectin of Entamoeba histolytica.
Infect Immun. 59, pp. 97–101.
(1991). Protein and antigen profiles of prevalent serovars of Leptospira interrogans.
Infect Immun.Infect Immun.. 59, pp. 1772-1777.
(1991). A randomized trial to evaluate the risk of gastrointestinal disease due to consumption of drinking water meeting current microbiological standards.
American journal of public health. 81, pp. 703–708.
(1991). Reduction of transmission of shigellosis by control of houseflies (Musca domestica).
Lancet. 337, pp. 993-7.
(1991). Reduction of transmission of shigellosis by control of houseflies (Musca domestica).
Lancet. 337, pp. 993–7.
(1991). Reduction of transmission of shigellosis by control of houseflies (Musca domestica).
Lancet. 337, pp. 993–7.
(1991). Regulations Concerning the Sanitary Quality of Drinking Water.
(1991). Revision of Campylobacter, Helicobacter, and Wolinella taxonomy: emendation of generic descriptions and proposal of Arcobacter gen. nov.
International Journal of Systematic Bacteriology. 41, pp. 88–103.
(1991). Revision of Campylobacter, Helicobacter, and Wolinella taxonomy: emendation of generic descriptions and proposal of Arcobacter gen. nov.
International journal of systematic bacteriology. 41, pp. 88–103.
(1991). Risk assessment and control of waterborne giardiasis.
American Journal of Public Health. 81, pp. 709-713.
(1991). Rural-urban migration and the urban public economy in a developing country.
Boston University. Ann Arbor.
(1991). Salmonella: A Postmodern Pathogen.
Journal of Food ProtectiJournal of Food Protecti. 54, pp. 563-568.
(1991). Serological (Em2-ELISA) and parasitological examinations of fox populations for Echinococcus multilocularis infections.
Zentralblatt Für Veterinärmedizin. Reihe B. Journal of Veterinary Medicine. Series B. 38, pp. 161–168.
(1991). Seroprevalence of helicobacter pylori infection in couples.
Journal of Clinical Microbiology. 29, pp. 642–644.