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|a Sistema de Bibliotecas de la Universidad Nacional de Costa Rica
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|a SIDUNA
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|2 21
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|a Lavelle, Marianne
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| 245 |
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|a Gas bueno, gas malo
|h artículo de revista
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4 |
|a GAS NATURAL
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0 |
4 |
|a METANO
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|a COMBUSTIBLES
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| 650 |
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|a CLIMATOLOGIA
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|a ATMOSFERA
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| 650 |
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|a IMPACTO AMBIENTAL
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| 773 |
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|t National geographic en español
|g Vol. 31, no. 6 (dic. 2012) p. 62-81
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| 852 |
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|a Biblioteca Joaquín García Monge. Hemeroteca
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| 856 |
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|u http://www.nationalgeographic.com.es/categoria/ng_magazine
|