publisher identifier
The first block in an ISBN is typically the group identifier, which is used to identify the country, geographic region, or language of the publisher. It is usually a group of 1 to 5 digits.
The ISBN of After the First Death is 0440208351.
The ISBN of First Test is 0679889175.
The ISBN of First Contact? is 057109757X.
The ISBN of The First Circle is 0061479012.
The ISBN of The First Death is 978-1899549429.
The ISBN for "Fudge-a-Mania" by Judy Blume is 978-0142408808.
The ISBN of First Meetings is 1-931-08169-7.
The ISBN of The First Casualty is 0-593-05111-4.
The ISBN of Inspector Ghote's First Case is 9780749079703.
The ISBN of First Light - Wellum book - is 0670912484.
The ISBN of Kitten's First Full Moon is 0060588284.
The ISBN of First Boy is 978-0-8050-7859-6.