عن المنظمة الأخبار الوسائط الإعلامية المتعددة الموضوعات الرئيسية الإحصائيات الأعضاء المطبوعات

أجريس - النظام الدولي للعلوم الزراعية والتكنولوجيا

[ نُشرت في: Pollution ]
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The Biodiversity Heritage Library

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Aquatic and wetland plants of southwestern United States

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

1961

Averett, R. C.

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

1972

Brown, Harley P. (Harley Proctor),

beetles identification united states
The Biodiversity Heritage Library - United Kingdom
Freshwater planarians (Turbellaria) of North America

1972

Kenk, Roman,

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

1972

Foster, Nancy (Nancy Marie),

polychaeta north america identification
The Biodiversity Heritage Library - United Kingdom
Freshwater isopods (Asellidae) of North America

1972

Williams, W. D. (William David)

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

1978

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

1971

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

1977

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