Sadly, bol.com has changed its website. This script no longer works. Modification is non-trivial (it's not just a URL update). Consider this script obsolete. When I start updating my own book-database, I'll rewrite it in python. Until then, either create your own script based on the numerous python examples online here, or search by hand

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# Quick hack to retrieve book information from bol.com by ISBN
# Dutch and English books
# Requires: sh, grep, sed, lynx, wget, printf, tail, head, cut and recode
#
# The script translates Hardcover --> Hardback, Paperback --> Trade Paperback
# and Pocket --> Paperback to conform to the default Tellico Book Collection.
# Some bol.com entries are wrong (i.e. it's listed as a Paperback, but it's
# clearly a Pocket).
#
# The script DOES NOT support ISBN13 ! If your book only mentions the ISBN13
# number, skip the first three digits during entry and type the next nine.
# Tellico will automatically calculate the tenth digit/character.
# ISBN lists are not supported either yet (-i number; number; number)
#
# Add the script as a new Data Source:
# Collection type: Book Collection
# Result type: Tellico
# Application path: path-to-this-script
# [x] ISBN -i %1
# [x] Update -u %{isbn}
#
# Do not forget to chmod 755 your copy of this script!