Data on metal-mine ventilation in 1929.

Bibliographic Details

Other Authors:	Harrington, D. (Daniel), 1878-
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : [publisher not identified], 1930.
Series:	Mines Bur. Info. Circ. No. 6246
Subjects:	Ventilation. Electronic books.
Online Access:	Connect to the full text of this electronic document