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00996nam a2200253 u 4500 |
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000187657 |
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20021014085816.0 |
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990427s1991 xx ||||| eng |
| 035 |
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|a 4451273
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|a Sistema de Bibliotecas de la Universidad de Costa Rica
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|a eng
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0 |
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|a 621.56
|b T255t
|2 21
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| 245 |
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|a Technical progress on protecting the ozone layer :
|b refrigeration, air conditioning and heat pumps technical options committee
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| 260 |
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|a [Lugar de publicación no identificado] :
|b United Nations Environment Programme,
|c 1991.
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| 300 |
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|a 293 páginas :
|b ilustraciones
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| 500 |
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|a RWR 570-LK-91423-al.--Pursuant to Article (6) of the Montreal Protocol on sbstances that deplete the ozone layer
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| 650 |
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|a FLUOROCARBONOS
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| 650 |
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|a REFRIGERACION
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| 650 |
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|a AIRE ACONDICIONADO
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| 650 |
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|a BOMBAS DE CALOR
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| 650 |
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|a CAPA DE OZONO
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| 650 |
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|x ASPECTOS AMBIENTALES
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| 912 |
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|a 14-OCT-2002 - CESPEDES RODRIGUEZ, MARIA ELENA
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| 916 |
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|a Centro Catalográfico
|