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| LEADER |
01006nam a2200229 a 4500 |
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050201s1978||||es a |||||||||||||spa|| |
| 041 |
0 |
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|a spa
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| 094 |
0 |
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|a 574.5
|b C764a
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| 100 |
0 |
|
|a Contreras Arévalo, Marina Estela
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| 245 |
0 |
0 |
|a Análisis microbiológico y físico-químico de agua potable en el área de San Salvador
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| 260 |
|
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|a San Salvador :
|b Universidad de El Salvador,
|c 1978
|
| 300 |
|
|
|a 74 h. ;
|b il
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| 502 |
|
|
|a Tesis (Lic. en Biología) -- Universidad de El Salvador
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| 650 |
|
|
|a AGUA-ANALISIS
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| 650 |
|
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|a AGUA POTABLE-EL SALVADOR-ANALISIS
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| 650 |
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|
|a AGUA-CONTAMINACION-EL SALVADOR
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| 991 |
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|a bc_noemi
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| 992 |
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|a 20/07/2006
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| 942 |
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|c BK
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| 999 |
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|c 129487
|d 129487
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| 952 |
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