SOIL AND WATER.. & SCHWAB, G. O. e. a. (1966). Soil and water conservation engineering.-- ed.2. John Wiley and Sons.

SOIL AND WATER.. and Glen O. et all SCHWAB. Soil and Water Conservation Engineering.-- Ed.2. New York: John Wiley and Sons, 1966.

SOIL AND WATER.. and Glen O. et all SCHWAB. Soil and Water Conservation Engineering.-- Ed.2. John Wiley and Sons, 1966.