Lessons from the ord / B. R. Davidson, Susan Graham Davidson, B. R. Graham, Susan Ord River Irrigation Project. Agricultural land. Irrigation systems. Economic aspects. Western Australia. Ord River region. HG189.A2 N47 1982 338.1099414 DAL Includes index. Bibliography: p. 112. St. Leonards, N.S.W. : Centre for Independent Studies, 1982. 1982. 1982 Text viii, 96 p. ; eng CIS policy monographs 2