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الألعاب
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الكتب الإلكترونية
Resins in Coal
5.0
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مجانية
Precision of the Volatile-matter Determination for Anthracite, Low-temperature Coke, and Subbituminous Coal
مجانية
Determination of Moisture-holding Capacity (bed Moisture) of Coal for Classification by Rank
5.0
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مجانية
An Investigation of a Laboratory Test for Determination of the Free-swelling Index of Coal: Revision of R.I. 3989
مجانية
Analyses of Ash from Coals of the United States
5.0
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مجانية
Fusibility of Ash Coals of the United States: Volumes 207-212
مجانية
Low-temperature Distillation Yields of Primary Tar and Light Oil from Coals of Various Ranks and Types
مجانية
Notes on the Sampling and Analysis of Coal
مجانية
Clinker Formation as Related to the Fusibility of Coal Ash
مجانية
The Determination of Moisture in Coke
مجانية
Low-temperature Carbonization of Alaskan Coals
مجانية
Methods of Sampling and Analyzing Coal-mine Dusts for Incombustable Content
مجانية
Methods of Analyzing Coal and Coke
مجانية
The Determination of Combustible Matter in Silicate and Carbonate Rocks
مجانية
Analyses of Mine and Car Samples of Coal Collected in the Fiscal Years 1916 to 1919: Issue 193
مجانية
Mining and Preparing Domestic Graphite for Crucible Use
مجانية
Carbonizing Properties: West Virginia Coals from the Eagle, No. 2 Gas, Pocahontas No. 3 and Pocahontas No. 4 Beds, Issues 487-493
مجانية
Splint Coals of the Appalachian Region: Their Occurrence, Petrography, and Comparison of Chemical and Physical Properties with Associated Bright Coals
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مجانية
Friability, Grindability, Chemical Analyses, and High- and Low-temperature Carbonization Assays of Alabama Coals
مجانية
Coal-mine Fatalities in February, 1925: Issues 2676-2680
مجانية