Natural resource management and agricultural productivity in sub-Saharan AfricaMohamed T. El-Ashry · First published 1992Open the Tome
Air pollution's toll on forests and cropsMacKenzie, James J., Mohamed T. El-Ashry · First published 1989Open the Tome
Water and arid lands of the western United StatesMohamed T. El-Ashry, Diana C. Gibbons · First published 1988Open the Tome
Ill windsMacKenzie, James J., James J. MacKenzie, Mohamed T. El-Ashry · First published 1988Open the Tome
