CONSTRUCCIÓN Y ADECUACIÓN POR UNIDAD DE OBRA TERMINADA DE 13 500 M2 DE TECHUMBRE LIGERA A BASE DE LÁMINA CORRUGADA A REALIZARSE EN 500 VIVIENDAS EN LAS DELEGACIONES ÁLVARO OBREGÓN CUAJIMALPA IZTAPALAPA Y TLALPAN DEL DISTRITO FEDERAL.

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