What is the difference between edition, printing, issue and state?
An edition includes all copies printed from the same plates or setting of type without substantial change. The first edition is the first public appearance of the text in that form. Any edition can appear in separate printings: each printing includes all of the copies printed from the same plates or setting of type at a given time. (For example, an edition may include 1000 copies, 500 printed in November, the additional 500 printed in January from essentially the same setting of type).
