::Scandcr: total source for automatic identification and data capture technologies such as bar code, barcode, barcoding, radio frequency identification, rfid, wireless, smart cards, biometrics::

See also:

iBreatheMusic.com - Features music theory articles, forum, lessons in technique, advice and music instruction from professional musicians. Topics include ear training, improvisation, and rhythm.
Satisfied Mind - Features directions for making various instruments including a banjo, dulcimer, thumb piano and drum. Also provides basic instruction for learning to play. By musician and educator Carol Raedy.

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