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Pedro,

ISO 2709 refers to the MARC (MAchine Readable Cataloguing). You can find
more information about it at 

http://www.loc.gov/marc/

More specifically, look at 

http://www.loc.gov/marc/bibliographic/ecbdhome.html

There you will find information about the data format.

Each MARC record consists of a leader, a directory and a data section.
MARC21, for example, has a leader of 24 characters and the 5 first
characters give the length of the entire record.
The directory starts at the 25th character and has a variable length.
It gives information about each occurance of a MARC data field
(tag,starting position and length).

Regards,

Andre Kahle
Societe d'histoire de La Prairie-de-la-Magdeleine & INFOKA
La Prairie, Québec
Canada
http://www.infoka.com/archilog/en



A 15:32 2006/04/04 +0100, vous avez écrit :
>I'm working on converting some ISO 2709 records into EAD. I think I have
>the EAD generation part pretty well covered but I haven't found a
>technical specification for the format of ISO 2709 records. I know this
>is a bit off-topic but I guess some people here will have experience
>with this. What I don't know is how to interpret the file format itself.
>It seems to have one record per line, but each line is non-obvious to
>interpret.
>
>Thanks,
>
>Pedro Côrte-Real.
>