Solvent extraction of coals by abietic acid at atmospheric pressure /
by E.C. Tarpley and H.C. Howard.

APA Citation

Tarpley, E. C., Howard, H. C. (1960). Solvent extraction of coals by abietic acid at atmospheric pressure. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.

MLA Citation

Tarpley, E. C, and H. C Howard. Solvent Extraction of Coals by Abietic Acid At Atmospheric Pressure. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1960.

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