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AGRIS - International System for Agricultural Science and Technology

[ Published in: Pollution ]
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1969

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Public works for water, pollution control, and power development, and Atomic Energy Commission appropriations for fiscal year 1970 | AEC and public works appropriations, 1970

1969-9999

public works appropriations and expenditures united states law and legislation
National Agricultural Library - United States of America
An illustrated key to the British freshwater ciliated protozoa commonly found in activated sludge

1969

Curds, Colin Robert

classification great britain eukaryota sewage ciliata freshwater protozoa
National Agricultural Library - United States of America