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s1963 s1963 xxu ||||| eng |
| 035 |
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|a 94886
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| 040 |
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|a Sistema de Bibliotecas de la Universidad de Costa Rica
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| 041 |
0 |
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|a eng
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| 082 |
0 |
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|a 333.709.73
|b S692o
|2 00
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| 100 |
1 |
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|a Sollers, Allan A.
|e Autor/a
|4 aut
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| 245 |
1 |
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|a Ours is the earth :
|b appraising natural resources and conservation.
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| 260 |
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|a New York, New York :
|b Holt, Rinehart and Winston,
|c 1963.
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| 300 |
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|a 128 páginas :
|b ilustraciones ;
|c 21 cm
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| 650 |
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|a RECURSOS NATURALES
|x ESTADOS UNIDOS
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| 949 |
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|a -JC. b KRG.
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| 916 |
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|a Registros del LS-2000
|