[ 发表于: Pollution ]
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结果 91-100 的 101
Freshwater isopods (Asellidae) of North America
1972
Williams, W. D (William David)
National Agricultural Library - United States of America
Freshwater polychaetes (Annelida) of North America
1972
Foster, Nancy (Nancy Marie)
National Agricultural Library - United States of America
Crayfishes (Astacidae) of North and Middle America
1972
Hobbs, Horton H. (Horton Holcombe)
National Agricultural Library - United States of America
Freshwater leeches (Annelida: Hirudinea) of North America
1972
Klemm, Donald J.
National Agricultural Library - United States of America
The freshwater amphipod crustaceans (Gammaridae) of North America 全文
1972
Holsinger, John R.
National Agricultural Library - United States of America
Aquatic dryopoid beetles (Coleoptera) of the United States
1972
Brown, Harley P.
National Agricultural Library - United States of America
The genus Argulus (Crustacea: Branchiura) of the United States
1972
Cressey, Roger F.
National Agricultural Library - United States of America
Freshwater sphaeriacean clams (Mollusca: Pelecypoda) of North America
1972
Burch, J. B. (John Bayard)
The twelve-year-old son of a Union army doctor killed during the fighting in Fredericksburg comes to understand the meaning of war and the fine line between friends and enemies when he begins corresponding with a young Confederate prisoner of war.
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National Agricultural Library - United States of America
A comparative study of state water pollution control laws and programs
1972
Heath, Milton S., (Milton Sydney)
National Agricultural Library - United States of America
Air pollution effects on potato and bean in southern Michigan
1972
Hooker, W. J. | Yang, T. C. | Potter, H. S.
National Agricultural Library - United States of America
