Petroleum investigations and production of helium.
Advance chapter from Bulletin 178, War work of the Bureau of mines,
by Van. H. Manning.
APA Citation
Manning, V. Hartrog., Stewart, A. (1919). Petroleum investigations and production of helium: Advance chapter from Bulletin 178, War work of the Bureau of mines. Washington: Govt. print. off.
MLA Citation
Manning, Vannoy Hartrog, 1861-1932, and Andrew Stewart. Petroleum Investigations And Production of Helium: Advance Chapter From Bulletin 178, War Work of the Bureau of Mines. Washington: Govt. print. off, 1919.
Warning: These citations may not always be complete (especially for serials).