Yazar
Upali Ananda Amarasinghe
18 cilt bulundu.
U. A. Amarasinghe, Upali Ananda Amarasinghe, R. Sakthivadivel, H. Murray-Rust · IWMI
31 sayfa · 1998
Irrigation
R. Sakthivadivel, Upali Ananda Amarasinghe, S. Thiruvengadachari · IWMI
38 sayfa · 2001
Integrated water development
R. Sakthivadivel, S. Thiruvengadachari, Upali Ananda Amarasinghe · IWMI
33 sayfa · 1999
Irrigation efficiency
