Petroleum Investigations and Production of Helium

Author:	Manning, Van. H.
Year:	1919
Document Type:	N/A
Series:	United States Bureau of Mines Reports
Report Number:	Bulletin 178C
Subjects:	Petroleum.
	Petroleum -- United States.
	Helium.
Link:	http://digital.library.unt.edu/ark:/67531/metadc38752/