R. L. Brown

1915

• Annual report of research and technologic work on coal, fiscal year 1951
• Annual report of research and technologic work on coal, fiscal year 1952
• Coal--size--degradation
• Principles of Powder Mechanics
• Principles of powder mechanics
• Principles of powder mechanics
• Principles of powder mechanics
• Report of research and technologic work on coal and related investigations, July 1, 1952 to December 31, 1953
• Seasonal adjustment of unemployment series
• Statistical report on the size grading of coal