Needle retention and needle loss of Scots pine in recent decades at Thetford and Alice Holt, England

Jalkanen RE, Aalto TO, Innes JL, Kurkela TT & Townsend IK
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Jalkanen, R. E., Aalto, T. O., Innes, J. L., Kurkela, T. T., & Townsend, I. K. (1994). Needle retention and needle loss of Scots pine in recent decades at Thetford and Alice Holt, England. Canadian Journal of Forest Research, 24(4), 863-867. https://doi.org/10.1139/x94-113