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050201s1972 mx a spa |
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|a Sistema Bibliotecario Universidad de El Salvador
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|a Ehrenfeld, David W.
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| 245 |
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|a Conservación y biología /
|c David W. Ehrenfeld ; tr. Roberto Folch Fabre
|
| 250 |
|
|
|a 1a. ed.
|
| 260 |
|
|
|a [S.l.] :
|b Interamericana,
|c 1972
|
| 300 |
|
|
|a 229 p. ;
|b il
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| 500 |
|
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|a Conclusiones, apéndices. índice alfabético; ciclos bioquimicos.
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| 650 |
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|a CONSERVACION DE LOS RECURSOS NATURALES
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| 650 |
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|a ECOLOGIA
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