Soil and Water Conservation :
Troeh, Frederick R.
Soil and Water Conservation : Productivity and Environmental Protection / (Acc. 3916) - 2nd ed. - Englewood Cliffs, N.J. : Prentice-Hall, c1991. - xiii, 530 p. : ill., maps ; 25 cm.
013830324X
Soil conservation.
Water conservation.
631.4 TRO
Soil and Water Conservation : Productivity and Environmental Protection / (Acc. 3916) - 2nd ed. - Englewood Cliffs, N.J. : Prentice-Hall, c1991. - xiii, 530 p. : ill., maps ; 25 cm.
013830324X
Soil conservation.
Water conservation.
631.4 TRO