t6X55a
hierarchical chain (BT): t t6 t6X t6X5 t6X55
t
t6
t6X
t6X5
t6X55
subclasses
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ILC 1 class details — ISKO Italia <http://www.iskoi.org/ilc/1/details.php> : 2011.07.15 - 2011.07.18 -