In what year was the album “Doble Opuesto” released by La Ley?

In what year was the album “Doble Opuesto” released by La Ley?: The album “Doble Opuesto” was released in 1991 by La Ley, featuring 10 tracks.
What is the most successful song from the album “Doble Opuesto” by La Ley?: “Prisioneros de la Piel” is the biggest hit from the album “Doble Opuesto” by La Ley.

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