wbbrbg
mpwberlg
hierarchical chain (BT): w wb wbb wbbr wbbrb
w
wb
wbb
wbbr
wbbrb
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 -