He whakaaturanga anō
Rārangi pukapuka
Obit. New Zealand Journal of Forestry 27, No 1 (1982): 19--21
Roche, M. 'Arnold Hansson and the formation of the New Zealand Institute of Foresters'. New Zealand Forestry 33, No 1 (1988): 16--19
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Tāngia te kōrero katoa