Tuatara: Volume 18, Issue 3, December 1970
Contents
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- The Optical Coincidence System of Indexing Information — by P. S. Dale
- The Application of Electron Microscopy to the Study of Some Interesting Spiral Microorganisms Found in Pond Water Collected at Otari Plant Museum, Wellington — by J. E. Sheridan, Jan Steel, M. N. Loper p. 103
- Palaeoclimatic Change in the Last 1,000 Years — by G. N. Park p. 114
- Circadian Rhythms — by Graham S. Hardy p. 124
- Concepts In Vegetation/Soil System Dynamics — I. Stability, Climax, Maturity and Steady-State — by G. N. Park p. 132
- Notice — First International Congress of Systematic and Evolutionary Biology p. 145
- Reviews p. 146