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Ventilation eddy zones at a model coal mine working face /
I tiakina i:
| Kaituhi matua: | |
|---|---|
| Kaituhi rangatōpū: | |
| Ētahi atu kaituhi: | |
| Hōputu: | Pukapuka |
| Reo: | Ingarihi |
| I whakaputaina: |
[Washington] :
U.S. Dept. of the Interior, Bureau of Mines,
[1974].
|
| Rangatū: | Report of investigations (United States. Bureau of Mines) ;
7991 |
| Ngā marau: | |
| Tags: |
Tāpirihia he Tūtohu
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|
| Whakaahuatanga ōkiko: | 14 p. |
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