Title
Geochemical reconnaissance of late Proterozoic volcanic and mafic plutonic rocks of the Al ʻAwshaziyah quadrangle and related rocks in the Qufar quadrangle, Northern Arabian Shield / by Gerhard W. Leo.
Published
[Reston, Va.?] : Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the Books and Open-File Reports Section, The Survey, 1986.