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tree census, Long-term permanent plot No.803206, Management Examination Forest No.6 (compartment 185), Nakagawa Experimental Forest, Hokkaido, tree census in 1980
tree census, Long-term permanent plot No.803206, Management Examination Forest No.6 (compartment 185), Nakagawa Experimental Forest, Hokkaido, tree census in 1988
tree census, Long-term permanent plot No.803206, Management Examination Forest No.6 (compartment 185), Nakagawa Experimental Forest, Hokkaido, tree census in 1996
tree census, Long-term permanent plot No.813207, Management Examination Forest No.7 (compartment 184), Nakagawa Experimental Forest, Hokkaido, tree census in 1981
tree census, Long-team permanent plot No.852001, Abies sachalinensis plantaion in Mumei-zawa Area (compartment 318), Teshio Experimental Forest, Hokkaido, tree census in 1985
tree census, Long-term permanent plot No.813207, Management Examination Forest No.7 (compartment 184), Nakagawa Experimental Forest, Hokkaido, tree census in 1989
tree census, Long-term permanent plot No.823208, Management Examination Forest No.8 (compartment 183), Nakagawa Experimental Forest, Hokkaido, tree census in 1982
tree census, Long-term permanent plot No.823208, Management Examination Forest No.8 (compartment 183), Nakagawa Experimental Forest, Hokkaido, tree census in 1990
tree census, Long-term permanent plot No.833209, Management Examination Forest No.9 (compartment 182), Nakagawa Experimental Forest, Hokkaido, tree census in 1983
tree census, Long-term permanent plot No.833209, Management Examination Forest No.9 (compartment 182), Nakagawa Experimental Forest, Hokkaido, tree census in 1991