"The work upon which this report was based was done under a cooperative agreement between the Bureau of Mines, United States Department of the Interior, and the College of Mines, University of Washington""January 1946."Mode of access: Internet
"This paper presents the results of work done under a cooperative agreement between the Southern Exp...
"This paper presents the results of work done under a cooperative agreement between the Northwest St...
"This paper presents the results of work done under a cooperative agreement between the Southern Exp...
Based on work done in cooperation with the School of Mining Engineering of the University of Washing...
"Based on work done in cooperation with the School of Mineral Engineering, University of Washington....
At head of title: U.S. Department of commerce. R. P. Lamont, secretary. Bureau of mines. Scott Turne...
"This report represents the results of work done by the Bureau of Mines, United States Department of...
" ... Study made by Bureau of Mines in cooperation with University of Alabama and coal producers of ...
"This paper presents results of work done under a cooperative agreement between the U.S. Bureau of M...
"One of a series of washability studies being conducted at Bureau's Southern Experiment Station as p...
"This paper presents the results of work done under a cooperative agreement between the Southern Exp...
Work done under cooperative agreement with the School of Mineral Engineering, University of Washingt...
This report covers the results of a study conducted to obtain washability data for Alaskan coals to ...
Cover title."This report presents the results of work done under a cooperative agreement between the...
"This report represents work done under a cooperative agreement between the United States Bureau of ...
"This paper presents the results of work done under a cooperative agreement between the Southern Exp...
"This paper presents the results of work done under a cooperative agreement between the Northwest St...
"This paper presents the results of work done under a cooperative agreement between the Southern Exp...
Based on work done in cooperation with the School of Mining Engineering of the University of Washing...
"Based on work done in cooperation with the School of Mineral Engineering, University of Washington....
At head of title: U.S. Department of commerce. R. P. Lamont, secretary. Bureau of mines. Scott Turne...
"This report represents the results of work done by the Bureau of Mines, United States Department of...
" ... Study made by Bureau of Mines in cooperation with University of Alabama and coal producers of ...
"This paper presents results of work done under a cooperative agreement between the U.S. Bureau of M...
"One of a series of washability studies being conducted at Bureau's Southern Experiment Station as p...
"This paper presents the results of work done under a cooperative agreement between the Southern Exp...
Work done under cooperative agreement with the School of Mineral Engineering, University of Washingt...
This report covers the results of a study conducted to obtain washability data for Alaskan coals to ...
Cover title."This report presents the results of work done under a cooperative agreement between the...
"This report represents work done under a cooperative agreement between the United States Bureau of ...
"This paper presents the results of work done under a cooperative agreement between the Southern Exp...
"This paper presents the results of work done under a cooperative agreement between the Northwest St...
"This paper presents the results of work done under a cooperative agreement between the Southern Exp...