1. ForestResearchInstitute, 1963 :Diplodiainfection associated with pruningPinus radiata. In: Report of Forest Research Institute for the period 1 January to 31 December 1962, p. 50, (N. Z. For. Serv.: Wellington).
2. J. W. Gilmour, 1964 : Survey ofDiplodiawhorl canker inPinus radiata. N. Z. For. Serv., For. Res. Inst., Research Leaflet No. 5.
3. Predisposition