Search Results for the EPA National Library Catalog

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Your Search: (AUTHOR=Crohurs AND H AND R)


 
 
 
Select Item Title Year Published
Experimental Bacterial and Chemical Pollution of Wells via Ground Water, and the Factors Involved. 1927
Study of the Pollution and Natural Purification of the Ohio River. IV. A Resurvey of the Ohio River Between Cincinnati, Ohio, and Louisville, Ky., including a Discussion of the Effects of Canalization and Changes in S anitary Conditions since 1914-1916. 1933
Study of the Pollution and Natural Purification of the Upper Mississippi River. Surveys and Laboratory Studies. 1932

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