Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
MATSUOKA Shigeru,A Method to Measure the Hardness of Wood in Standing Woodpecker Nesting Tress.,Japanese Journal of Ornithology,0913-400X,The Ornithological Society of Japan,2000,49,3,151-155,https://cir.nii.ac.jp/crid/1390282679457607680,https://doi.org/10.3838/jjo.49.151