The publication time of this book can be determined by the edition, because the edition is the time when each edition of this book is printed and published. For example, if the first edition of a book was printed in March 2003, the second edition in June 2007 and the third edition in April 20 12, the first edition of the book will be published in March 2003. Similarly, the second edition was published in June 2007, and the third edition was published in April 20 12.

It should be noted that the print run and publication time are different. Print run refers to the number of times a book of the same edition is printed. For example, if the first edition of a book was printed in March 2003, and then the second, third and fourth editions were printed in June 2007, April 20 12 and June 20 18, the first edition of the book will still be published in March 2003, and the first printing will be in 2000.

Therefore, if you want to determine the specific edition of this book, you should look at the edition rather than the print run.