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.)
Chemical Analyses of Igneous Rocks Published from 1884 to 1900, with a critical discussion of the character and use of analyses. By Henry Stephens Washington. United States Geological Survey, Professional Paper No. 14. Washington, Government Printing Office. 1903. Pp. 495.