Authors
Teruyoshi Nagamitsu
Forestry and Forest Products Research Institute (FFPRI),, Tsukuba, Japan
Takayuki Kawahara
Forestry and Forest Products Research Institute (FFPRI),, Tsukuba, Japan
Ayako Kanazashi
Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI),, Sapporo, Japan