A B C D E F G H I J-K L M N O P Q-R S T U V W-Y
close this section of the libraryStrip mining.(2)
View the documentAvoid problem spoils through overburden analysis / by Thomas L. Despard. Despard, Thomas L. Upper Darby, Pa. : Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station, 1974.
View the documentRestoring surface-mined land / . Washington, D.C. : U.S. Dept. of Agriculture, 1968.