Assessing total nitrogen in surface-water samples
Subtitle: precision and bias of analytical and computational methods
By: by David L. Rus [and three others]
Contributors: Geological Survey (U.S.)
Series: Scientific investigations report -- 2012-5281
Publisher: U.S. Department of the Interior, U.S. Geological Survey
Published: 2012
Place of publication: Reston, Virginia
Language: eng
Number of pages: 38
Subjects: Water; Nitrogen content; Measurement; Sampling
Notes: Title from title screen (viewed on July 15, 2013).

Includes bibliographical references (pages 35-36).