Tertiary Larger Foraminifera of Venezuela. Donald Winchester Gravell 1933 Smithsonian Miscellaneous Collections, Volume 89, Number 11, December 9, 1933 All my gratitude and appreciativeness to Jhonny Casas for sharing this historical publication of the large foraminifera in Venezuela. You can download complete PDF version at / Puedes bajar la versión completa en PDF en: https://mariantoc.github.io/stratigraphy.html#Winchester

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