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00685nam a22001931a 4500 |
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20120328192150.0 |
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080728s1990 000 0 eng d |
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|a 1559630337
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| 040 |
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|a Sistema de Bibliotecas de la Universidad Nacional de Costa Rica
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| 082 |
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4 |
|a 639.9
|b D621e
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| 100 |
1 |
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|a Dixon, John A.,
|d 1946-
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1 |
0 |
|a Economics of protected areas :
|b a new look at benefits and costs /
|c John A. Dixon, Paul B. Sherman
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| 260 |
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|a Washington, D. C. :
|b Island ,
|c 1990
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| 300 |
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|a xvolmenesi, 234 páginas ;
|c 23 cm.
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|a AREAS DE RESERVAS
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| 650 |
0 |
4 |
|a ECONOMIA AMBIENTAL
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| 650 |
0 |
4 |
|a CONSERVACION DE L0S RECURSOS NATURALES
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| 700 |
1 |
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|a Sherman, Paul B.
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