Wicher, C. A. (1949). On the age of the higher Upper Cretaceous of the Tampico embayment area in Mexico, as an example of the worldwide existence of microfossils and the practical consequences arising from this. Museum d'Histoire Naturelle du Pays Serbe, Bulletin, SérieA2, 50–105.
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Wicher, C. A.
1949
On the age of the higher Upper Cretaceous of the Tampico embayment area in Mexico, as an example of the worldwide existence of microfossils and the practical consequences arising from this
Museum d’Histoire Naturelle du Pays Serbe, Bulletin, SérieA2, 50–105