Contrbution to the paleontology and stratigraphy of Iran, part I

K. Seyed_ Emami, A. Haghipour and A. Brants

Silurian and lower devonian brachiopods, stucture and strtigraphy of the green pond outlier in Southeastern New York/ by Arthur J. Boucot, K. Lal. Gauri, and John Southard

Boucot, Arthur J., Lal Gauri, K.

Geologia e genesi del sedimenti fosfatici devoniani dell Elburz Centrale/ Riccardo Assereto

Assereto, Riccardo

Mississippian brachiopods from the chappel Limestone of Central Texas/ by John Lyman Carter

Carter, John Lyman

The strstigraphic succession, flora and Stephanian a rock at barruelo ( prov, palencia), N.w.Spain/ R. H. Wagner & C.F. Winkler Prins

Winkler Prins, C.F.