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Experimental bacterial and chemical pollution of wells via ..
United States congressional serial set ; serial set no. 8746;House document / 69th Congress, 2nd session. House ; no. 597
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Milk and its relation to the public health (revised and enl..
United States congressional serial set ; serial set no. 5712;House document / 61st Congress, 2nd session. House ; no. 178
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U.S. Department of Agriculture. Nineteenth annual report of..
United States congressional serial set ; serial set no. 4546;House document / 57th Congress, 2nd session. House ; no. 474
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U.S. Department of Agriculture. Eighteenth annual report of..
United States congressional serial set ; serial set no. 4387;House document / 57th Congress, 1st session. House ; no. 682
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U.S. Department of Agriculture. Sixteenth annual report of ..
United States congressional serial set ; serial set no. 4019;House document / 56th Congress, 1st session. House ; no. 745