TY - BOOK AU - Hansen,Vaughn E. AU - Israelsen,Orson Winso AU - Stringham,G.E. TI - Irrigation principles and practices SN - 0471030589 U1 - 631.7 PY - 1980/// CY - New York PB - Wiley KW - Irrigation N1 - Third ed. by O. W. Israelsen and V. E. Hansen ER -