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170901s1973 r 000 0 eng d |
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|a AR-CrUNPB
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|a 384.545 6/P.26
|2 20
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100 |
1 |
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|a Polcyn, Kenneth A
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|a An educator s guide to communications satellite technology /
|c Kenneth A Polcyn
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255 |
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|a .545 6
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260 |
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|a Washington, D.C :
|b Academy for Educational Development,
|c 1973
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300 |
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|a xv,99 p
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590 |
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|a Registros migrados a formato MARC
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650 |
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|a TELECOMUNICACIONES
|2 Unescot
|9 5980
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650 |
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7 |
|a SATELITES DE COMUNICACION
|2 Unescot
|9 5665
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942 |
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|c BK
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|a lg040823
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|c 70140
|d 70140
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