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).