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| LEADER |
00722nam a22001931a 4500 |
| 001 |
UNA01000036775 |
| 005 |
20120328190453.0 |
| 008 |
080728s1970 000 0 spa d |
| 040 |
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|a Sistema de Bibliotecas de la Universidad Nacional de Costa Rica
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| 082 |
0 |
4 |
|a 631.4
|b M592m
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| 245 |
0 |
0 |
|a Methods of study in soil ecology :
|b proceedings of the Paris symposium=
|b méthodes d'etude de l'ecologie du sol :
|b actes du colloque de Paris
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| 250 |
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|a 1
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| 260 |
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|a [S.l.] :
|b Paris : UNESCO ,
|c 1970
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| 300 |
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|a 303] h. / 21x33 cm. ;
|c ill. ;
|c 1v.
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| 490 |
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|a Ecology and conservation=Écologie et conservation ;
|v 2
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| 500 |
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|a Fotocopia. Heredia : BUNA, 1984
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| 650 |
0 |
4 |
|a SUELO
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| 650 |
0 |
4 |
|a ECOLOGIA
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| 650 |
0 |
4 |
|a ECOLOGIA DEL SUELO
|