Guidelines for the control of soil degradation.
Guidelines for the control of soil degradation.
- Rome : United Nations Environment Programme, 1983.
- v, 38 p. : ill.
"M-57"--T.p. verso.
9251014043 (pbk.)
Soil conservation.
Soil degradation.
"M-57"--T.p. verso.
9251014043 (pbk.)
Soil conservation.
Soil degradation.