Maryland. Dept. of Natural Resources
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Nutrient and sediment concentrations, loads, and trends for..:

Senus, Michael P ; Moyer, Douglas L ; Langland, Michael J...
Also available via Internet from USGS web site. Address as of 1/17/07: http://pubs.usgs.gov/sir/2004/5125/pdf/sir-2004-5125.pdf; current access available via PURL..  , 2005
 
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Statistical identification of hydrochemical response units ..:

Preston, Stephen D., 1955- ; Geological Survey (U.S.) ; Maryland. Dept. of Natural Resources
Also available via Internet from the USGS web site (PDF version). Address as of 6/7/01: http://md.usgs.gov/publications/wrir-00-4232/pdf/PrestonHRU.pdf; current access is available via PURL..  , 2000
 
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Potential wildlands in Maryland:

Maryland. Dept. of Natural Resources
http://hdl.handle.net/2027/umn.31951d02695453p.  , 1973
 
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