Simplification of sizes and terminology of high voltage bituminous coal (handled over docks at American head of the Great Lakes)
Subtitle: regional recommendation RR1-29, September 26, 1930
Contributors: United States. National Bureau of Standards
Series: United States. Dept. of Commerce. National Bureau of Commerce. Miscellaneous publication -- no. 113
Publisher: Govt. Print. Off.
Published: 1930
Place of publication: Washington
Language: eng
Number of pages: 14
Subjects: Bituminous coal