Walter T. Ray

The Flow of Heat Through Furnace Walls (Classic Reprint)  Walter T Ray Hardback. Forgotten Books, 2018-07-31 ISBN 9780484840422     Comparative Tests of Run-Of-Mine and Briquetted Coal on the Torpedo Boat Biddle (Classic Reprint)  Walter T Ray Paperback. Forgotten Books, 2016-11-05 ISBN 9781334175923     The Flow of Heat Through Furnace Walls (Classic Reprint)  Walter T Ray Paperback. Forgotten Books, 2016-11-07 ISBN 9781334198649     The Significance of Drafts in Steam-Boiler Practice (Classic Reprint)  Walter T Ray Paperback. Forgotten Books, 2016-07-31 ISBN 9781331938996     The Significance of Drafts in Steam-Boiler Practice  Walter T Ray Henry Kreisinger Hardback. Palala Press, 2015-11-15 ISBN 9781346395241     Tests of Run-Of-Mine and Briquetted Coal in a Locomotive Boiler: Usgs Bulletin 412  Walter T. Ray Paperback. BiblioGov, 2013-03-22 ISBN 9781288975785     Comparative Tests of Run-Of-Mine and Briquetted Coal on the Torpedo Boat Biddle: Usgs Bulletin 403  Walter T. Ray Paperback. BiblioGov, 2013-03-22 ISBN 9781288975792     The Significance of Drafts in Steam-Boiler Practice: Usgs Bulletin 367  Walter T. Ray Paperback. BiblioGov, 2013-03-22 ISBN 9781288975808