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Aquatic and wetland plants of southwestern United States Full text

1972

Correll, Donovan Stewart,

aquatic plants southwestern states wetland plants
The Biodiversity Heritage Library - United Kingdom
Macro-invertebrates of the Clark Fork River, Montana : a pollution survey Full text

1961

Averett, R. C.

montana pollution water freshwater biology clark fork (mont. and idaho) water quality bioassay
The Biodiversity Heritage Library - United Kingdom
Aquatic dryopoid beetles (Coleoptera) of the United States Full text

1972

Brown, Harley P. (Harley Proctor),

beetles identification united states
The Biodiversity Heritage Library - United Kingdom
Freshwater isopods (Asellidae) of North America Full text

1972

Williams, W. D. (William David)

identification north america asellus crustacea lirceus
The Biodiversity Heritage Library - United Kingdom
Freshwater planarians (Turbellaria) of North America Full text

1972

Kenk, Roman,

platyhelminthes identification north america planaria
The Biodiversity Heritage Library - United Kingdom
Freshwater polychaetes (Annelida) of North America Full text

1972

Foster, Nancy (Nancy Marie),

identification north america polychaeta
The Biodiversity Heritage Library - United Kingdom
Report to the Congress on ocean pollution and offshore development | Rep. Congr. ocean pollut. offshore dev Full text

1978

marine pollution fishery management marine resources government policy united states
The Biodiversity Heritage Library - United Kingdom
Removal of nitrate by an algal system Full text

1971

algae purification nitrates water biological treatment nitrogen removal
The Biodiversity Heritage Library - United Kingdom
Report to the Congress on ocean pollution, overfishing, and offshore development Full text

1977

fisheries marine pollution marine resources overfishing marine resources conservation government policy united states
The Biodiversity Heritage Library - United Kingdom