Linguistic diffusion in Arnhem Land. By Jeffrey Heath. (Research and regional studies, 13. ) Canberra: Australian Institute of Aboriginal Studies; Atlantic Highlands, NJ: Humanities Press, 1978. Pp. viii, 146. US 11. 75. - Ngandi grammar, texts, and dictionary. By Jeffrey Heath. Canberra: Australian Institute of Aboriginal Studies; Atlantic Highlands, NJ: Humanities Press, 1978. Pp. xii, 297. US 24. 75. | Synapse