Coal blend from selected localities.
Norway | |
| Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67 |
| Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67 |
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67 | |
Playle, B. (1960): Contribution to the Mineralogy of Norway No.4. New finds of coal blend. Norsk Geologisk Tidsskrift.40, 65-67 |