New Documents

A new orthoceratoid cephalopod from the Ordovician (Caradoc) of east-central Iran

The Paleomagnetism of Two Aegean Deep- Sea Cores

Gramimetric Indian Ocean Geoid

Zinc

Lead - Uranium Ration of Siliceous Pitchblende from Great Bear Lake , N. W. T. , Canada, and its Possible Age