Search Results for the EPA National Library Catalog

Items Found: 7

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Your Search: (AUTHOR=Helsel AND Dennis AND R.)

 
 
 

Select Item Title Year Published
Microbiological monitoring for the U.S. Geological Survey National Water-Quality Assessment Program / 2000
Nondetects and data analysis : statistics for censored environmental data / 2005
Nutrients in the nation's waters : identifying problems and progress : a National Water-Quality Assessment of nutrients / 1996
Nutrients in the nation's waters : too much of a good thing? / 1996
Statistical methods in water resources 1992
Statistical methods in water resources / 1993
Statistics for censored environmental data using Minitab and R / 2012

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