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UNA01000044188 |
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20120328190835.0 |
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080728s1997 000 0 eng d |
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|a Sistema de Bibliotecas de la Universidad Nacional de Costa Rica
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| 082 |
0 |
4 |
|a 363.7392
|b W927p
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| 100 |
1 |
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|a World Congress on Air Pollution in Developing Countries (1996 oct. 21-26 : San José, C.R.)
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| 245 |
1 |
0 |
|a Proceedings
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| 260 |
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|a El Salvador :
|b PROECO ,
|c 1997
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| 300 |
|
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|a volúmenes2. :
|b ilustraciones ;
|c 28 cm.
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| 650 |
0 |
4 |
|a CONTAMINACIÓN DEL AIRE
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| 650 |
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4 |
|a CONTAMINACION INDUSTRIAL
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| 650 |
0 |
4 |
|a CONTAMINACION
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| 650 |
0 |
4 |
|a CONTAMINANTES DEL AIRE
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| 650 |
0 |
4 |
|a COMBUSTIBLES
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| 650 |
0 |
4 |
|a TRANSPORTE PUBLICO
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| 650 |
0 |
4 |
|a EMISIÓN POR AUTOMÓVILES
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| 650 |
0 |
4 |
|a CONTAMINANTES
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| 650 |
0 |
4 |
|a PAISES EN DESARROLLO
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| 650 |
0 |
4 |
|a CONGRESOS
|