La ecologia : para estudiantes secundarios.
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| Format: | Book |
| Language: | Spanish |
| Published: |
San José, Costa Rica :
FAO, MAG, UCR, EUA,
1974.
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| Subjects: |
| Item Description: | Documento técnico de trabajo N#2 (Proyecto FAO RLAT/TF199) |
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| Physical Description: | 41 p. : il. : byn. ; 27 cm. |