Search Results for the EPA National Library Catalog

Items Found: 2
Showing: Items 1 - 2
Your Search: (AUTHOR=Walter AND Harold AND J)


 
 
 
Select Item Title Year Published
Algae in water supplies : an illustrated manual on the identification, significance, and control of algae in water supplies / 1962
Key to the genera of freshwater Gastropods (snails and limpets) occurring in Michigan. 1957

Save, Print or Email Selected Records