Back of Bourke : a study of land appraisal and settlement in semi-arid Australia / R. L. Heathcote. Heathcote, R. L. Land settlement Warrego Valley. HD1039.W3 H4 333.740943 HEB "Bibliographical note and references": p. 227-233. New York : Cambridge University Press 1965. 1965. 1965 Text x, 244 p. : eng Warrego Valley Economic conditions. Warrego Valley.