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The difficult, dangerous, and selfless work of an expedition that set out for the harsh and deserted Plaza Wincul Valley in search of oil.
Duilio Marzio
Nelly Meden
Juan José Miguez
Jardel Filho
Guillermo Murray
Ricardo Argemí
María Aurelia Bisutti
Omar Tovar
Julio Bianquet
Miguel Ángel Muiño
