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|a AR-LpUBP
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1 |
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|a Sorensen, Michael F.
|9 64392
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| 245 |
1 |
0 |
|a Observations of Mallards in the Parkland of Alberta
|
| 260 |
|
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|a Ottawa :
|b Canadian widlife service,
|c 1978.
|
| 300 |
|
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|a 20 p. :
|b gráfs. ;
|c 23 cm.
|
| 490 |
0 |
|
|a Occasional papers ;
|v 36
|
| 500 |
|
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|a Introducción también en francés Bibliografía p. 20
|
| 650 |
|
4 |
|a AVES-CANADÁ
|9 64393
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| 942 |
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|c 34
|d Miguel Kiperszmid
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|z a
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