"hansen, vaoghn w. "
irrigation principles and practices: / vaoghn.w. hansen - 4 ed. - usa : john wiley and sons 1987. - ", 417p.; 23 cm."
0 471 08449 2
--
631. 7 han
irrigation principles and practices: / vaoghn.w. hansen - 4 ed. - usa : john wiley and sons 1987. - ", 417p.; 23 cm."
0 471 08449 2
--
631. 7 han