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- 31027294 contributor B780028.
- 31027294 contributor B780029.
- 31027294 created "1931.".
- 31027294 date "1931".
- 31027294 date "1931.".
- 31027294 dateCopyrighted "1931.".
- 31027294 extent "iv, 101 p.".
- 31027294 issued "1931".
- 31027294 issued "1931.".
- 31027294 language "eng".
- 31027294 publisher "Washington, U.S. Govt. print. off.,".
- 31027294 subject "Ore-dressing.".
- 31027294 subject "TN1 .U6 no. 499".
- 31027294 title "Treating a complex ore. Data from experimental work on ores in the Denver laboratories of the Complex ores recovery co.,".
- 31027294 type "text".