Gaemers, P. A. M. (1978). Systematics of the alveolinids of the Tremp Basin, South-Central Pyrenees, Spain. Leidse Geologische Mededelingen. 51(1): 103-113.
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Gaemers, P. A. M.
1978
Systematics of the alveolinids of the Tremp Basin, South-Central Pyrenees, Spain