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00888nam a2200253 a 4500 |
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AR-LpUBP |
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20250704191346.0 |
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ta |
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091116s1975 cl g 000 0 spa d |
| 040 |
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|a AR-LpUBP
|b spa
|c AR-LpUBP
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| 100 |
1 |
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|a Schenone, Osvaldo Horacio
|9 63959
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| 245 |
1 |
0 |
|a Un estudio de costo-beneficio de la conversión de centrales telefónicas manuales a automáticas
|
| 260 |
|
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|a Santiago :
|b Universidad Católica de Chile,
|c 1975.
|
| 300 |
|
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|a 6 p. :
|b tablas ;
|c 26 cm.
|
| 490 |
0 |
|
|a Documento de trabajo ;
|v 38
|
| 650 |
|
4 |
|a TELÉFONO (ECONOMÍA)
|9 63960
|
| 700 |
1 |
|
|a Bunster, Jorge
|9 63961
|
| 700 |
1 |
|
|a Baeza, Sergio
|9 63962
|
| 942 |
|
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|c BK
|
| 952 |
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|y BK
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| 999 |
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|c 77189
|d 77189
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| 988 |
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|c 34
|d Miguel Kiperszmid
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| 997 |
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|z a
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