A selected and annotated bibliography on gas purification.
By A.R. Powell and K.C. Walker, sub-committee I of the Purification committee ...
APA Citation
Powell, A. Richard., Walker, K. C., American Gas Association. (1921). A selected and annotated bibliography on gas purification. [New York, N.Y.: American gas association.
MLA Citation
Powell, Alfred Richard, 1891-, Kenneth C Walker, and American Gas Association. A Selected And Annotated Bibliography On Gas Purification. [New York, N.Y.: American gas association, 1921.
Warning: These citations may not always be complete (especially for serials).