1. Population surveys of toheroa (Mollusca: Eulamellffiranchiata) on Northland Beaches, 1962–67
2. Greenway, J. P. C. 1972.Further data from population surveys of toheroa (Mollusca: Eulamellibranchiata) on Northland beaches, 1962–71, Fisheries Technical Report 85 36New Zealand Marine Department.
3. Greenway, J. P. C. 1974.Population surveys of toheroa on Northland beaches, 1972–73, Fisheries Technical Report 128 7New Zealand Ministry of Agriculture and Fisheries.
4. Greenway, J. P. C. 1975.The effect of a limited open season for toheroa on Dargaville Beach 1974, Fisheries Technical Report 139 6New Zealand Ministry of Agriculture and Fisheries.