*** Welcome to piglix ***

ETTN


The Electronic Textbook Track Number (ETTN) is a unique numeric identifier of Electronic-books, journals and conference proceedings. 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 or academician 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


...
Wikipedia

...