TY  - RPRT
TI  - Mineral reconnaissance of the Wadi al 'Aya quadrangle
AU  - Robert Francis Johnson
AU  - Virgil A. Trent
PY  - 1968
DO  - 10.3133/ofr68151
UR  - https://pubs.usgs.gov/publication/ofr68151
ID  - ofr68151
ER  -