Ethiopia: taxonomy, cartography, and ecology of soils,
by Roy L. Donahue.
APA Citation
Donahue, R. Luther. (1972). Ethiopia: taxonomy, cartography, and ecology of soils. East Lansing: African Studies Center, Michigan State University.
MLA Citation
Donahue, Roy Luther, 1908-. Ethiopia: Taxonomy, Cartography, And Ecology of Soils. East Lansing: African Studies Center, Michigan State University, 1972.
Warning: These citations may not always be complete (especially for serials).