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| LEADER |
01499nam a2200253 a 4500 |
| 008 |
050201s1974||||es |||||||||||||||||spa|| |
| 041 |
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|a spa
|
| 094 |
|
|
|a 628.1662
|b C352d
|
| 100 |
|
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|a Castillo Azucena, Benedicto Alfredo
|
| 245 |
|
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|a Diseño de una planta de tratamiento de agua para una urbanización de 100 casas con fuente de agua de un nacimiento con problemas de contaminación debido a exceso de hierro y manganeso
|
| 260 |
|
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|a San Salvador :
|b Universidad de El Salvador,
|c 1974
|
| 300 |
|
|
|a 27 h
|
| 502 |
|
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|a Tesis (Ing. Química) -- Universidad de El Salvador
|
| 650 |
|
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|a AGUA-DESINFECCION
|
| 650 |
|
|
|a AGUA-PURIFICACION
|
| 991 |
|
|
|a bc_mercy
|
| 992 |
|
|
|a 28/07/2006
|
| 942 |
|
|
|c BK
|
| 999 |
|
|
|c 65748
|d 65748
|
| 952 |
|
|
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|7 0
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|9 117250
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|d 2012-08-15
|i 10106191
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| 952 |
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