1. A provisional methodology for soil degradation assessment
پدیدآورنده :
کتابخانه: Central Library of Agricultural (Tehran)
موضوع : $ASoil degradation
رده :
S
623
.
F564
1979
2. Land degradation: development and breakdown of terrestrial environments
پدیدآورنده : Barrow, Christopher J.
کتابخانه: Central Library of Agricultural (Tehran)
موضوع : $ANature -- Effect of human beings on,$ALand degradation,$APollution -- Environmental aspects,$ASoil conservation
رده :
GF
75
.
B37
1991
