ETTN

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The Electronic Textbook Track Number (ETTN) is a unique numeric identifier of electronic books, journals, conference proceedings etc. ETTN is based upon 13-digit code created by Magnanimitas Assn.

ETTN Codes can be used only for electronic text files. Any publisher, university, researcher, academician etc. could ask for unique code for his/her electronic text generated by Magnanimitas Assn.

ETTN Code consists of 5 parts - AAA-BB-CCCCC-DD-F

AAA (3-digit) is classified by The Statistical Classification of Economic Activities in the European Community (NACE) and shows the focus of text
BB (2-digit) – the year of ETTN generating for a text
CCCCC (5-digit) – special identification code for text
DD (2-digit) – month of ETTN generating for a text
F (1-digit) – check digit

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