William Beall Gray

Gray's Plumbing Design and Installation; a Veritable Encyclopedia of Modern Practice Based on Work Done by the Author and Other Experts in Every Branch of the Plumbing and Allied Trades and Covering Approved Practice in Every Part of the Country

Gray's plumbing design and installation

Plumbing; a Working Manual of American Plumbing Practice, Including Approved Fixtures, Piping Systems, House Drainage, and Modern Methods of Sanitation

Plumbing: A Working Manual of American Plumbing Practice, Including Approved ...