Author:

Helenes,J.;De Guerra,C.;Vasquez,J.

Year:

1998

Title:

Palynology and chronostratigraphy of the Upper Cretaceous in the subsurface of the Barinas Area, Western Venezuela.

Reference:

Helenes,J. et al. (1998) Palynology and chronostratigraphy of the Upper Cretaceous in the subsurface of the Barinas Area, Western Venezuela. AAPG, Bulletin Vol. 82 # 7 P. 1308- 1328

Google Academy:

try to search by title in english