Ponrajah, A.J.P.
Design of irrigation headworks for small catchments / [by] A.J.P.Ponrajah - 2nd ed. - Colombo Irrigation Department 1984 - v, 97 p.
627 / PON
Design of irrigation headworks for small catchments / [by] A.J.P.Ponrajah - 2nd ed. - Colombo Irrigation Department 1984 - v, 97 p.
627 / PON