Coal
Subtitle: Pt. 1, Coals of the Monongahela Formation or Upper Productive Coal Measures; Pt. 2, Chemical Analyses and Calorific Tests of the Clarion, Lower Kittanning, Middle Kittanning and Upper Freeport Coals
Publisher: Creative Media Partners, LLC
Published: 2018
Language: eng
ISBN-13: 9781377598758