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LEADER |
00962nam a2200361 i 4500 |
007 |
ta |
040 |
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|a Universidad Nacional Agraria
|b spa
|
907 |
|
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|a P36
|
911 |
|
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|a AS
|
978 |
|
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|a GRH
|
979 |
|
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|a 26-05-2001
|
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
|