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|a spa
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| 100 |
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|a Cierra López, Francisco José
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| 245 |
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|a Producción de acero y su control en un horno rotatorio de reverbero, sin crosol, a partir de mineral de hierro del país /
|c Francisco José Cierra ... [et al.].
|
| 260 |
|
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|a San Salvador :
|b Universidad de El Salvador,
|c 1974
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| 300 |
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|a 205 h. ;
|b il
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| 502 |
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|a Tesis (Ing. Mecánica) -- Universidad de El Salvador
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| 650 |
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|a ACERO-PRODUCCION
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| 650 |
|
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|a ACERO-METALURGIA
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| 700 |
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|a Portillo Jimenez, Alfredo Santiago
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| 700 |
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|a Osorio Martínez, Victor Manuel
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| 700 |
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|a Guevara, José Ciro
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| 991 |
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|a bc_noemi
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| 992 |
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|a 21/07/2006
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| 942 |
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