Permian- triassic Relationships and Faunal changes in the Easern Tethys

Amplitude Spectra of PeP and P Phased

The Earth's Deep- Fracture System( 1972)

Smaller Mississippian and Lower Pennsylvanian Calcareous Foraminifers From Nevada

Sur la Geologie du Massif du Sahand ( Azerbaidjan- Iran Occidental)