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|a 631.46
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2 |
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|a Organización de las Naciones Unidas para la educación, la ciencia y la cultura (UNESCO)
|9 5107
|
| 245 |
1 |
0 |
|a Biologie des sols; comptes rendus de recherches
|
| 260 |
|
|
|a París :
|b UNESCO,
|c 1969.
|
| 300 |
|
|
|a 248 p. :
|b láms., tablas, diagrs. ;
|c 28 cm.
|
| 490 |
0 |
|
|a Recherches sur les ressources naturelles ;
|v 9
|
| 500 |
|
|
|a Bibliografía al final de capítulos
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| 650 |
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4 |
|a BIOLOGIA DE SUELOS
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| 942 |
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