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In page Mirta Acuña de Baravalle:

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In October 1977, she received an invitation from Alicia Zubasnabar, another of the Mothers, to form a group of grandmothers who were looking for their missing grandchildren. She was one of the twelve founding women of Grandmothers of the Plaza de Mayo. Her daughter, son-in-law, and granddaughter are still missing.[citation needed]