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  1. Plant analysis for nutrient assay of natural waters, by Gerald C. Gerloff. Project officer, Gary Glass.
    By: Gerloff, Gerald C. - Glass, Gary E. - United States. Environmental Protection Agency. Office of Research and Monitoring.
    Publication info: Washington,For sale by the Supt. of Docs., United States Govt. Print. Off.,1973.
    Contributed by: MBLWHOI Library
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