[Extracts from Award and recommendations of Bituminous Coal Commission, with addition of Mines Bureau Technical paper 235, Safe storage of coal, with bibliography, by H. H. Stoek.]
Notes:
[Extracts from Award and recommendations of Bituminous Coal Commission, with addition of Mines Bureau Technical paper 235, Safe storage of coal, with bibliography, by H. H. Stoek.] † Distribution Made by Issuing Office.