Forsyth, P.J.; Coates, G. 1992 The Moeraki boulders : die Moeraki Steinkugeln. Lower Hutt: Institute of Geological & Nuclear Sciences. Institute of Geological & Nuclear Sciences information series 5 6 p
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Forsyth, P.J.; Coates, G. 1992 The Moeraki boulders : die Moeraki Steinkugeln. Lower Hutt: Institute of Geological & Nuclear Sciences. Institute of Geological & Nuclear Sciences information series 5 6 p