411 REFERENCE · Wiktionary
Koolen
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
+
Proper noun
en Dutch.
Derived terms
en Koolen-De Vries syndrome
411 REFERENCE · Wiktionary
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.