Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
System zur Messung der Feuchte und Konsistenz von Mischgut, sowie Verfahren zur Messung von Feuchte, Konsistenz und Füllstand des Mischgutes eines Trommelmischers
Water-quality, bed-sediment, and biological data (October 1992 through September 1993) and statistical summaries of water-quality data (March 1985 through September 1993) for streams in the upper Clark Fork basin, Montana
Use of Rapid Bioassessment Protocols to Describe Fish and Benthic Macroinvertebrate Communities in Three Creeks near the Little River National Wildlife Refuge, McCurtain County, Oklahoma. U. S. Fish and Wildlife Service, Region 2 Environmental Quality Program