Bibliography of geological literature for the Republic of Sudan 1986-1990J. R. Vail · First published 1991Open the Tome
Bibliography of geological sciences for the Republic of the Sudan, 1837-1985J. R. Vail · First published 1986Open the Tome
Geology of the Wadi ŌkŌ--Khor Hayēt area, Red Sea Hill, SudanJ. R. Vail · First published 1984Open the Tome
Outline of the geology and mineral deposits of the Democratic Republic of the Sudan and adjacent areasJ R. Vail · First published 1978Open the Tome
A case study in assistance for parent-teacher organizationsBarry R. Vail · First published 1977Open the Tome
Geological reconnaissance in the Zalingeí and Jebel Marra areas of western Darfur Province, SudanJ. R. Vail · First published 1972Open the Tome
A dictionary of books relating to America, from its discovery to the present timeJoseph Sabin, Sabin Joseph, Eames Wilberforce, R. Vail · First published 1868Open the Tome
