Troeh, Frederick R.
Soil and water conservation for productivity and environmental protection / - Englewood Cliffs, N.J. : Prentice-Hall, c1980. - xv, 718 p. : ill. ;
0138221553 :
Soil conservation.
Water conservation.
Soil erosion.
631.45 / TRO/SO
Soil and water conservation for productivity and environmental protection / - Englewood Cliffs, N.J. : Prentice-Hall, c1980. - xv, 718 p. : ill. ;
0138221553 :
Soil conservation.
Water conservation.
Soil erosion.
631.45 / TRO/SO