ເກມ
ແອັບ
ຮູບເງົາ ແລະ ໂທລະພາບ
ປຶ້ມ
ເດັກນ້ອຍ
google_logo Play
ເກມ
ແອັບ
ຮູບເງົາ ແລະ ໂທລະພາບ
ປຶ້ມ
ເດັກນ້ອຍ
none
search
help_outline
ເຂົ້າສູ່ລະບົບດ້ວຍ Google
play_apps
ຫ້ອງສະໝຸດ ແລະ ອູປະກອນ
payment
ການຈ່າຍເງິນ ແລະ ການສະໝັກໃຊ້
reviews
ການເຄື່ອນໄຫວຂອງຂ້ອຍໃນ Play
redeem
ຂໍ້ສະເໜີ
Play Pass
settings
ການຕັ້ງຄ່າ
ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ
•
ຂໍ້ກຳນົດບໍລິການ
ເກມ
ແອັບ
ຮູບເງົາ ແລະ ໂທລະພາບ
ປຶ້ມ
ເດັກນ້ອຍ
ອີບຸກ
Resins in Coal
5,0
star
ຟຣີ
Precision of the Volatile-matter Determination for Anthracite, Low-temperature Coke, and Subbituminous Coal
ຟຣີ
Determination of Moisture-holding Capacity (bed Moisture) of Coal for Classification by Rank
5,0
star
ຟຣີ
An Investigation of a Laboratory Test for Determination of the Free-swelling Index of Coal: Revision of R.I. 3989
ຟຣີ
Analyses of Ash from Coals of the United States
5,0
star
ຟຣີ
Fusibility of Ash Coals of the United States: Volumes 207-212
ຟຣີ
Low-temperature Distillation Yields of Primary Tar and Light Oil from Coals of Various Ranks and Types
ຟຣີ
Notes on the Sampling and Analysis of Coal
ຟຣີ
Clinker Formation as Related to the Fusibility of Coal Ash
ຟຣີ
The Determination of Moisture in Coke
ຟຣີ
Low-temperature Carbonization of Alaskan Coals
ຟຣີ
Methods of Sampling and Analyzing Coal-mine Dusts for Incombustable Content
ຟຣີ
Methods of Analyzing Coal and Coke
ຟຣີ
The Determination of Combustible Matter in Silicate and Carbonate Rocks
ຟຣີ
Analyses of Mine and Car Samples of Coal Collected in the Fiscal Years 1916 to 1919: Issue 193
ຟຣີ
Mining and Preparing Domestic Graphite for Crucible Use
ຟຣີ
Carbonizing Properties: West Virginia Coals from the Eagle, No. 2 Gas, Pocahontas No. 3 and Pocahontas No. 4 Beds, Issues 487-493
ຟຣີ
Splint Coals of the Appalachian Region: Their Occurrence, Petrography, and Comparison of Chemical and Physical Properties with Associated Bright Coals
5,0
star
ຟຣີ
Friability, Grindability, Chemical Analyses, and High- and Low-temperature Carbonization Assays of Alabama Coals
ຟຣີ
Coal-mine Fatalities in February, 1925: Issues 2676-2680
ຟຣີ