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|a Sistema de Bibliotecas de la Universidad Nacional de Agricultura
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|a Ettinger, Karl E.
|9 12874
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| 245 |
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|a Investigación y Relaciones Publicas /
|c Karl E. Ettinger
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| 250 |
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|a 1a ed.
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| 260 |
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|a México;
|b Centro Regional de Ayuda Técnica
|c 1961
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| 300 |
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|a 78 pag.
|b Fig.
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| 650 |
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|x INVESTIGACIÓN - PUBLICA
|x INVESTIGACIÓN - MERCANTIL
|x RELACIONES - PUBLICAS
|9 12875
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| 942 |
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|2 ddc
|c BK
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