You dont need to load this module yourself in most cases. Business::ISBN
will load it when it loads.
These data are generated from the RangeMessage.xml file provided by
the ISBN Agency. You can retrieve this yourself at <https://www.isbn-international.org/range_file_generation>.
This file is included as part of the distribution and should be installed
If you want to use a different RangeMessage.xml file, you can set
the ISBN_RANGE_MESSAGE environment variable to the alternate location
before you load Business::ISBN. This way, you can use the latest (or
even earlier) data without having to install something new or wait for
an update to this module.
If the default RangeMessage.xml or your alternate one is not available,
the module falls back to data included in Data.pm. However, that data
is likely to be older data. If it does not find that file, it looks
for RangeMessage.xml in the current directory.
The data are in %Business::ISBN::country_data (although the country
part is historical). If you want to see where the data are from, check
brian d foy, <email@example.com>
Yakov Shafranovich updated the data in October 2008.
Daniel Jakubik updated the data in July 2012.
Markus Spann suggested looking for RangeMessage.xml in the current
directory to make it work with Perl app bundlers.