Longwall shearers gain in power and efficiency
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| Description | publication published in 1993 |
| Author/s |
author: Robert A. Jankowski Edward D. Thimons John A. Organiscak |
| Publication date | January 1, 1993 |
| Language | English |
| Country of origin | |
| Wikipedia link | |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |