National Rural clean water program :
manual : Title 14.
|Corporate Author:||United States.|
[Washington] : Dept. of Agriculture, Soil Conservation Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 
Water conservation /
Water conservation / United States /
Handbooks, manuals, etc.
Water > Water / Pollution > Water / Pollution / United States > Water / Pollution / United States / Handbooks, manuals, etc.
Issued July 1979.
 p. ;
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