[6]
Calcareous nannoplankton biostratigraphy of Middle and Upper Cretaceous deposits in Tunisia,Southern Spain and France. Verbeek,J.W. Utrecht Micropaleontological Bulletin . 1977
[6]
Calcareous nannoplankton biostratigraphy of Middle and Upper Cretaceous deposits in Tunisia,Southern Spain and France. Verbeek,J.W. Utrecht Micropaleontological Bulletin . 1977