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The most important step in product line expansion process is pricing. — Preceding unsigned comment added by 207.157.9.169 (talk) 18:19, 8 May 2012 (UTC)[reply]

http://books.google.de/books?id=fM33afZnVy8C page 173 can be used as a reference — Preceding unsigned comment added by Unterbuchse (talk • contribs) 11:20, 12 February 2013 (UTC)[reply]