Combined lists of environmental laboratories.
[Springfield, Ill.] : Illinois Environmental Protection Agency, .
Environmental laboratories /
Environmental laboratories / Illinois /
Water > Water / Illinois > Water / Illinois / Analysis > Water / Illinois / Analysis / Directories.
Drinking water > Drinking water / Analysis.
Environmental laboratories > Environmental laboratories / United States > Environmental laboratories / United States / Directories.
Lists certified laboratories capable of carrying out analyses of drinking water.
32 p. ;
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