1. P.A. Gillespie and A.L. McKenzie, Abst. Intern. Symp. Trop. Shallow Water Community, Port Moresby, p. 28 (1980).
2. V.J. Chapman, Department Lands & Survey, Auckland, 28 pp. (1976).
3. V.J. Chapman, Ibid, 32pp. (1978a).
4. V.J. Chapman, Ibid, 32 pp. (1978b).
5. V.J. Chapman, Ibid, pp. 35 (1978c).