Norberto Lopez, Mcgrawhill

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J. Silvestre Mendez, Mcgraw Hill

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Sopena, Sopena

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Martha Montilla, Vadell Hermanos

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Maria Matilde Suarez, Saber

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Cruz, Ra-ma

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Stanley Baran-j. Hidalgo, Mcgraw Hill

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Luz Del Carmen Juarez G., Trillas

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James-otis Rodner S., Academia de Ciencias

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Gaceta N° 6.655, Ml

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Gaceta Nº 6.117, Rgraficas 2021

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Gaceta Nº 6.129, Njr

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J. Levine - M. Levine, Mcgraw Hill

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Tatiana B. de Maekelt, Ciencias Politicas

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Gaceta Nº 6.116, Njr

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Gaceta Nº 39.566, Njr

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Hector Ramon Peñaranda Q., Luz

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Armando J. Gamez Ledezma, Biosfera

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Rafael Benitez Dominguez, Cadiz

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Gaceta Nº 5.890, Njr

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A. Rubio Gil, Diaz de Santos

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Schwarz y Schweppe, Robin Book

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Gaceta Nº 38.263, la Piedra

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Burke A. Cunha, Mcgraw Hill

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Frida Diaz Barriga Arceo, Mcgraw Hill

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Geceta 39.432, Njr

$2.00

D. Eiteman - A. Stonehill, Prentice Hall

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