Landsat 81 proceedings of the second Australasian remotesensing conference, Canberra, Aug.31-Sept.4, 1981 - Canberra Landsat 81 1981 - iv. 30 cm. Subjects--Topical Terms: Land use--ManagementLand use--Remote sensingLandsat satellites Dewey Class. No.: 333.73 / 17 / 028