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Tuatara: Volume 20, Issue 3, November 1973
Contents
Contents
| New Guinea, Our Tropical Counterpart | P. Wardle | 113 |
| Present Knowledge of Oceanic Circulation and Hydrology around New Zealand — 1971 | R. A. Heath | 125 |
| A Guide to the Freshwater Mollusca of New Zealand | M. J. Winterbourn | 141 |
| The Floras of the South-western Part of South Africa | G. B. Cone | 160 |
| Letter | 165 |