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240808s1981 mdub gr ||||||eng d |
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|a Sistema de Bibliotecas de Universidad de Costa Rica
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| 245 |
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|a Reducing pollution damage to the patuxent river /
|c by Pamela Lindstrom.
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| 260 |
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|a Maryland :
|b University of Maryland, Department of Economic and Bureau of Business and Economic Research,
|c 1981.
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| 300 |
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|a ii, 18 hojas :
|b 1 mapa en blanco y negro.
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|a Working paper
|v 1981-13
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| 500 |
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|a Algunos datos tomados de la cubierta
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| 949 |
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|a -AEM
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