Brown, Lester R. Wolf, Edward C.
Soil erosion quiet crisis in the world economy - Washington Worldwatch Institute 1984 - 49 p. - Worldwatch paper: 60 .
0-916468-60-7
SOIL CONSERVATION
SOIL EROSION
551.3.053 / B7
Soil erosion quiet crisis in the world economy - Washington Worldwatch Institute 1984 - 49 p. - Worldwatch paper: 60 .
0-916468-60-7
SOIL CONSERVATION
SOIL EROSION
551.3.053 / B7