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CD-#.# Compact disc* CD-13.1
MP-#.# Motion picture* MP-45.1
T-#.# Audiotape* T-249.1
Vt-#.# Videotape* Vt-269.1
Phon-#.# Phonograph record* Phon-65.1
DVDs DVD DVD* DVD- #
E.# Electronic files (web sites, digital photos, etc.) E.1
Audio/visual numbers are assigned by Joanne.
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