Unger, Paul W.
Tillage systems for soil and water conservation / by Paul W. Unger. - Rome : FAO, 1984. - xvi, 278 p. : ill. - FAO soils bulletin ; 54 .
Contains bibliography: p. 241-270.
9251021546
92013241
Tillage.
Cropping systems.
Conservation tillage.
Soil conservation.
Water conservation
Tillage systems for soil and water conservation / by Paul W. Unger. - Rome : FAO, 1984. - xvi, 278 p. : ill. - FAO soils bulletin ; 54 .
Contains bibliography: p. 241-270.
9251021546
92013241
Tillage.
Cropping systems.
Conservation tillage.
Soil conservation.
Water conservation