Is the water safe?
Subtitle: think before you drink. --
Series: FS/United States Department of Agriculture, Forest Service -- 359
Publisher: U.S. Dept. of Agriculture, Forest Service
Published: 1981
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Water; Drinking water; Giardiasis; Contamination; Purification
Notes: "February 1981"--p. [4].