Resins in coal /
by W.A. Selvig.

APA Citation

Selvig, W. A. (Walter Alfred). (1945). Resins in coal. Washington, D.C.: U.S. Govt. Print. Off..

MLA Citation

Selvig, W. A. (Walter Alfred), 1886-1972. Resins In Coal. Washington, D.C.: U.S. Govt. Print. Off., 1945.

Warning: These citations may not always be complete (especially for serials).