ISAN (International Standard Audiovisual Number)
ISBN (～　～　Book　～)
ISCN (～　Sustainable Campus Network)
ISDN (Integrated Services Digital　～)
ISEN
ISFN (Israel Society for Neuroscience)
ISGN (いろいろある)
ISHN (いろいろある)
ISIN (International Securities Identification Number)
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