URL：https://www.researchgate.net/profile/Heldur-Sander/publication/344125358/figure/fig2/AS:932615091654657@1599364173867/An-approximately-two-fold-magnified-image-of-a-sandpapered-disc-of-the-outer-bark-of-an_Q640.jpg
掲載元：https://www.researchgate.net/figure/An-approximately-two-fold-magnified-image-of-a-sandpapered-disc-of-the-outer-bark-of-an_fig2_344125358
