|
|
|
|
| LEADER |
00762nam a2200217 u 4500 |
| 001 |
000212641 |
| 005 |
20011123155105.0 |
| 008 |
010425s1999 ne ||||| spa |
| 020 |
|
|
|a 9058080897
|
| 035 |
|
|
|a 6460663
|
| 040 |
|
|
|a Sistema de Bibliotecas de la Universidad de Costa Rica
|
| 041 |
0 |
|
|a spa
|
| 082 |
0 |
|
|a 338.162
|b E67e
|2 20
|
| 100 |
1 |
|
|a Erenstein, Olaf C.A.
|e Autor/a
|4 aut
|
| 245 |
1 |
4 |
|a The economics of soil conservation in developing countries:
|b the case of crop residue mulching /
|c Olaf C.A. Erenstein
|
| 260 |
|
|
|a Wageningen,
|c c1999.
|
| 300 |
|
|
|a x, 301 páginas :
|b ilustraciones
|
| 500 |
|
|
|a Tesis (doctorado)--Wageningen University 1999.
|
| 650 |
|
|
|a CONSERVACION DE SUELOS
|
| 650 |
|
|
|a POLITICA
|
| 917 |
|
|
|a 25-APR-2001 - JIMENEZ VELASCO, MARTA SYLIA
|