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- 20027057 contributor B604838.
- 20027057 created "1919.".
- 20027057 date "1919".
- 20027057 date "1919.".
- 20027057 dateCopyrighted "1919.".
- 20027057 extent "32 p.".
- 20027057 isPartOf "The University of Minnesota. Minnesota school of mines. Experiment station. Bulletin no. 6".
- 20027057 issued "1919".
- 20027057 issued "1919.".
- 20027057 language "eng".
- 20027057 publisher "Minneapolis,".
- 20027057 spatial "Minnesota.".
- 20027057 subject "Iron ores Minnesota.".
- 20027057 subject "Ore-dressing.".
- 20027057 subject "TN520 .D3".
- 20027057 title "A new machine for concentrating Minnesota wash ores, by Edward W. Davis.".
- 20027057 type "text".