http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Pennsylvanian Correlations in the Eastern Interior and Appalachian coal fields
Wanless, Harold R[ollin]: Pennsylvanian Correlations in the Eastern Interior and Appalachian coal fields
Wanless, Harold R[ollin]: Pennsylvanian Correlations in the Eastern -- Interior and Appalachian coal fields. — (New York) 1939. VI, 130 S., -- 7 Taf. 8° (Geol. Soc. of America. Special Papers. 17.) -- [39. 25048. 25 -- 3. 15. 302. 303 -- BZD
Geol. Soc. of America. Special Papers. 17