Gregg, D.R.; Grange, L.I.; Williamson, J.H.; Hurst, J.A.; Clark, R.H.; Wilson, S.H. 1960 The geology of Tongariro subdivision. Lower Hutt: New Zealand Geological Survey. 152 p. New Zealand Geological Survey bulletin 40. doi:10.21420/C061-YD32.
Abstract: The Tongariro Subdivision (635 square miles) lies in the centre of the North Island, and includes almost all of Tongariro National Park. This bulletin discusses the physiography, stratigraphy, structure, the volcanoes, and the economic geology of the region. (auth/EB)
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