Ayoob, S.M. On the interference of wells installed in the vicinity of a canal / S.M. Ayoob, J.K. Jaffri and Mohammad Saleem - number 31 volume 2 - Lahore : Irrigation research institute, 1971 - 16 pages In English. Pbk. Subjects--Topical Terms: Irrigation. Dewey Class. No.: 530 INT 1971 V-2#31