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This category is about the activity of grouping together items that are related to one another by a finite group of criteria. (i.e. collecting) Items can be man made objects, like coins or stamps, or they may be items found in nature like sea shells or sand. Included in this category is information about the acquisition, display, identification, and conservation of these collections.
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Polish Fireball's Chemnitzer Concertina Music Site
http://www.concertinamusic.com/sbox/sbox_1999.html