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080728s1991 xxua 000 0 eng d |
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|a 0946888205
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|a Sistema de Bibliotecas de la Universidad Nacional de Costa Rica
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|a 598.2072
|b C755c
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|a Conserving migratory birds /
|c edited by T. Salathe.
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|a Cambridge :
|b The International Council for bird preservation ,
|c 1991.
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|a 393 páginas :
|b ilustraciones blanco y negro ;
|c 22 cm.
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|a International Council for Bird Preservation Technical Publication;
|b n° 12
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|a AVES
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|a CONSERVACION
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|a CONSERVACION DE LA VIDA SILVESTRE
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| 650 |
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|a MIGRACION DE ANIMALES
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| 650 |
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|a PROTECCION DE LAS AVES
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