Desertification of arid lands
1985
Dregne, H. E. (Harold E.) |
Dregne, H. E. (Harold E.)
Desert development : proceedings of the second International Desert Development Conference held on 25-31 January 1987 in Cairo, Egypt
1991
Bishay, A. |
Dregne, H. E. (Harold E.) |
Arid lands in transition
1970
Dregne, H. E. (Harold E.) |