TY - RPRT TI - Geochemical reconnaissance of late Proterozoic volcanic and mafic plutonic rocks of the Al'Awshaziyah Quadrangle and related rocks in the Qufar Quadrangle, Northern Arabian Shield AU - Gerhard W. Leo PY - 1986 DO - 10.3133/b1680 UR - https://pubs.usgs.gov/publication/b1680 ID - b1680 ER -