Groundwater exploration on the mountain plains of Dhamar and Rada in the Yemen Arabic Republic
Tài liệu tham khảo
Geukens, 1966, Geology of the Arabian Peninsula, Yemen, U.S. Geol. Surv. Prof. Pap., 560-B
Grolier, 1977, Data from Geological Investigations in the Yemen Arab Republic during 1976, U.S. Department of the Interior, Geological Survey. Project Rep. (IR) Y-12
Grolier, 1978, Geological Map of the Yemen Arab Republic (Sana'a). Map I-1143-B
ILACO, 1978
ILACO, 1980
ILACO, 1981
ILACO, 1981
ILACO, 1982