Authors
Q. F. Meng
College of Forestry, Beihua University, 3999 Huashan Rd,, Jilin City, China
W. T. Gao
College of Forestry, Beihua University, 3999 Huashan Rd,, Jilin City, China
J. Y Pang
College of Forestry, Beihua University, 3999 Huashan Rd,, Jilin City, China
Y. H. Weng
Tree Improvement Office, New Brunswick Department of Natural Resources, 3732 Route 102, Island View,, New Brunswick, China