ISBN

El libro en Ecuador 2002

2003

The use of ISBNs compared with keywords as means of retrieving bibliographic records on-line

Anthony G. Curwen

1980

International Standard Book Number

Agencia Chilena I.S.B.N.

2003

American national standard for book numbering

American National Standards Institute.

1973

Publishers' International Isbn Directory 1994/95 (Publishers' International Isbn Directory// Internationales Verlagsadressbuch Mit Isbn-Register)

Internatinal Isbn Agency

1994

Publishers' International Isbn Directory, 1995/Internationales Verlasgadressbuch Mit Isbn-Register, 1995 (Publishers' International Isbn Directory// Internationales ... Verlagsadressbuch Mit Isbn-Register)

International Isbn Agency

1995

Zhongguo ISBN chu ban zhe ming lu

Feng Yang

1987

International ISBN publishers' index

International ISBN Agency Staff

1977