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|a spa
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| 100 |
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|a Salazar Alvarenga, Carlos
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| 700 |
|
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|a Pacheco, Rafael Ignacio
|e Asesor
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| 245 |
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|a Estudio sanitario de la cuenca del Río Lempa / Carlos Salazar Alvarenga; asesor Rafael Ignacio Pacheco
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|a San Salvador :
|b Universidad de El Salvador,
|c 1969
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| 300 |
|
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|a 153 h.
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| 502 |
|
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|a Tesis (Ingeniero Civil) -- Universidad de El Salvador, San Salvador, 1969
|
| 592 |
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|a Características topográficas e hidrológicas del Río Lempa y sus afluentes
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| 592 |
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|a Usos del Río Lempa y sus afluentes
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| 592 |
|
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|a Descripción sanitaria de los afluentes del Río Lempa
|
| 592 |
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|a Descripción sanitaria del Río Lempa
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| 991 |
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|a No asignado
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| 992 |
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|a 23/02/2011
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