Bibliography: leaves 453-487. / xxiii, 487 leaves : ill. map ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Marginal farm families face a never-ending risk of loss of land followed by a further weakening of their livelihood-base. This thesis develops a methodology by which the vulnerable can be identified, characterises their existing and potential production systems and explores necessary shifts in approach by State and non-government organisations that will not only reduce vulnerability but empower marginal farm families. / Thesis (Ph.D.)--University of Adelaide, Dept. of Politics, 1997