vk97vtud
hierarchical chain (BT): v vk vk9 vk97 vk97v vk97vt vk97vtu
v
vk
vk9
vk97
vk97v
vk97vt
vk97vtu
subclasses
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ILC 2 class details — ISKO Italia <http://www.iskoi.org/ilc/1/details.php> : 2011.07.15 - 2011.07.18 -