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|a 621.396.946
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1 |
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|a Ploman, Edward
|9 90667
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| 245 |
1 |
0 |
|a Guide des communications par satellites
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| 260 |
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|a París :
|b UNESCO,
|c 1972.
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| 300 |
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|a 36 p. ;
|c 27 cm.
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| 490 |
0 |
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|a Organización de las Naciones Unidas para la educación, la ciencia y la cultura ;
|v 66
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| 500 |
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|a bibliografía, p. 33-36
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| 650 |
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4 |
|a COMUNICACIONES ESPACIALES
|9 76623
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| 942 |
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