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20171005151048.0 |
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010220t1979 |||a 00 0 eng d |
| 020 |
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|a 0660101653
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| 245 |
1 |
2 |
|a A trilobite zonation of middle ordovician rocks, southwestern district of Mackenzie /
|c Rolf Ludvigsen.
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| 260 |
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|a Ottawa :
|b Geological Survey of Canadá,
|c 1979
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| 500 |
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|a Bibliografía: p. 48-52.
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| 082 |
0 |
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|a 560.1724
|2 20 ES
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| 650 |
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7 |
|a PALEONTOLOGIA-CANADA
|2 LEMB.1
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| 650 |
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7 |
|a PALEONTOLOGIA-ORDOVICICO
|2 LEMB.1
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| 650 |
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7 |
|a INVERTEBRADOS FOSILES
|2 LEMB.1
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| 100 |
1 |
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|a Ludvigsen, Rolf.
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| 490 |
0 |
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|a Geological Survey. Bulletin
|v 312
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| 830 |
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|a Geological Survey. Bulletin
|v 312
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| 300 |
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|a 98 p.
|b il., diagrs.
|c 28 cm.
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| 040 |
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|c AR-RiUNS
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| 942 |
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|c LIBRO
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| 999 |
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|c 6621
|d 6621
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