Journal of Soil and Water Conservation. v.34, 1979
Schnepf, Max, ed.
Journal of Soil and Water Conservation. v.34, 1979 edited by Max Schnepf - Lowa Soil Conservation Society of America 1979 - v.34, 300 p.; 28cm.
00224561
Journal of Soil and Water Conservation. v.34, 1979 edited by Max Schnepf - Lowa Soil Conservation Society of America 1979 - v.34, 300 p.; 28cm.
00224561