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00932nam a2200205 a 4500 |
| 008 |
050201s1971||||es a |||||||||||||spa|| |
| 041 |
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|a spa
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| 094 |
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|a 338.476257
|b R621a
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| 100 |
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|a Rivera, Armando Baltazar
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| 245 |
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|a Análisis económico de las perspectivas de construir carreteras de concreto hidráulico en El Salvador
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| 260 |
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|a San Salvador :
|b Universidad de El Salvador,
|c 1971
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| 300 |
|
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|a 90 h. ;
|b il
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| 502 |
|
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|a Tesis (Lic. en Economía) -- Universidad de El Salvador
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| 650 |
|
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|a CARRETERAS DE CONCRETO-EL SALVADOR-CONSTRUCCION
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| 991 |
|
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|a bc_mercy
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| 992 |
|
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|a 11/07/2006
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| 942 |
|
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|c BK
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| 999 |
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|c 65135
|d 65135
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| 952 |
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