Persepolis was originally published in 4 volumes. Some later editions, especially in the U.S., combined volumes 1-2 into one work Persepolis: The Story of a Childhood; volumes 3-4 were combined into Persepolis: The Story of a Return. Keep this in mind when combining/separating.
This edition is the first volume of the four volume set. Please do not combine with Persepolis 1: The Story of a Childhood which contains volumes 1 and 2.