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Definition funny of Janzoons:
Greeting equivilent to 'goodnight' for people who work all night and goto sleep in the mornings.
Well I'm going to sleep, janzoon.
Books about Janzoons:
Abel Janzoon Tasman's Journal and His Life and Labours (Paperback) by J. Heeres (Feb 24, 2010)
CAPTAIN WILLEM (Janzoon) by Joan I. Smith (1997)
Abel Janzoon Tasman: His Life and Voyages by James Backhouse Walker (1896)