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| LEADER |
00962nam a2200361 i 4500 |
| 007 |
ta |
| 040 |
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|a Universidad Nacional Agraria
|b spa
|
| 907 |
|
|
|a P36
|
| 911 |
|
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|a AS
|
| 978 |
|
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|a GRH
|
| 979 |
|
|
|a 26-05-2001
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| 991 |
|
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|a PP
|
| 991 |
|
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|a UNA-PUB
|
| 035 |
|
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|a 036891
|
| 041 |
|
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|a spa
|
| 092 |
|
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|a PP P36 H565
|
| 100 |
1 |
|
|a Herrera, M.=700 1
|a Tobias, H.
|
| 700 |
1 |
|
|a Revolorio, A.
|
| 700 |
1 |
|
|a Lopez, J.
|
| 700 |
1 |
|
|a Pineda, P.
|
| 700 |
1 |
|
|a Chan, M.
|
| 245 |
1 |
0 |
|a Evaluacion de tres practicas de conservacion de suelos en la subcuenca del rio pensativo, Sacatepequez, Guatemala
|
| 773 |
0 |
# |
|k Tikalia (Guatemala)
|g v. 12(1) p.17-32
|
| 500 |
|
|
|a ilus, 6 ref
|
| 650 |
|
7 |
|a ZEA MAYS
|
| 650 |
|
7 |
|a PHASEOLUS VULGARIS
|
| 650 |
|
7 |
|a CONSERVACION DE SUELOS
|
| 650 |
|
7 |
|a CUENCAS HIDROGRAFICAS
|
| 650 |
|
7 |
|a EROSION POR EL AGUA
|
| 650 |
|
7 |
|a CONTROL DE LA EROSION
|
| 650 |
|
7 |
|a RENDIMIENTO DE CULTIVOS
|
| 650 |
|
7 |
|a GUATEMALA
|
| 942 |
|
|
|c BK
|2 agris
|