Safe water practices in the back country, avoiding giardiasis and cryptosporidiosis
By: [H. Conner and M.A. Sward].
Contributors: Sward, Mary Ann.; Oregon State University. Extension Service.
Series: EC -- 1431.; Extension circular (Oregon State University. Extension Service) -- 1431.
Publisher: Oregon State University Extension Service
Published: 1993
Place of publication: [Corvallis, Or.]
Language: eng
Subjects: Giardiasis -- Prevention.; Cryptosporidium -- Prevention.; Drinking water -- Contamination.; Water -- Purification.
Notes: Title from cover.

"October 1993."

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