P-ISSN 0002-9599
E-ISSN 1945-452X
Vol. s4-46, Issue 271, 1918July 01, 1918 EDT
A Century of Government Geological Surveys
A Century of Government Geological Surveys
George Otis Smith,
Smith, G. O. (1918). A Century of Government Geological Surveys. American Journal of Science, s4-46(271), 171–192. https://doi.org/10.2475/ajs.s4-46.271.171