Nitrate water activities
By: [developed by Joan Valieant and Jerry L. Southland ; prepared by Information Division, Agricultural Research Service].
Contributors: Valieant, Joan.; Southland, Jerry L.; United States. Agricultural Research Service. Information Division.; Agricultural Research Center (Beltsville, Md.). Educational Services Branch.
Series: Science study aid -- no. 4.
Publisher: Educational Service Branch, Agricultural Research Center; For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1972
Place of publication: Beltsville, Md; Washington. D.C
Language: eng
Number of pages: 12
Subjects: Nitrates -- Environmental aspects -- Study and teaching (Elementary); Water -- Pollution -- Study and teaching (Elementary)
Notes: Caption title.

"Issued October 1971; slightly revised January 1972"--p. 12.

Bibliography: p. 12.