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Detailed Reference Information
Mergoil et al. 1991
Mergoil, J., Boivin, P., Bles, J.-L., Cantagral, J.-M. and Turland, M. (1991).
Le Velay. Son volcanisme et les formations associees.
Geologie de la France 96: 3,923-3,933.
Journal
Geologie de la France