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- 22026782 alternative "Operation of permissible electrical equipment.".
- 22026782 contributor B630974.
- 22026782 created "1922.".
- 22026782 date "1922".
- 22026782 date "1922.".
- 22026782 dateCopyrighted "1922.".
- 22026782 extent "iv, 23 p.".
- 22026782 issued "1922".
- 22026782 issued "1922.".
- 22026782 language "eng".
- 22026782 publisher "Washington, Govt. print. off.,".
- 22026782 subject "Electricity in mining.".
- 22026782 subject "TN1 .U6 no. 306".
- 22026782 title "Operation and maintenance of electrical equipment approved for permissability by the Bureau of mines,".
- 22026782 type "text".