| Title | The ancient biosphere |
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| Author | Nowlan, G S |
| Source | Geoscience Canada vol. 20, no. 3, 1993 p. 113-122 |
| Year | 1993 |
| Alt Series | Geological Survey of Canada, Contribution Series 15492 |
| Document | serial |
| Lang. | English |
| Media | paper |
| Subjects | general geology; lithosphere; science policy; evolution |
| GEOSCAN ID | 194311 |
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