Revised edition textbook, perfect for English language learning. - Title: PROGRESS IN ENGLISH 21 - Author: ROBERT M. FLYNN - Edition: REVISED - Type: BOOK 1 - Publisher: EDEC Thank you for looking. This textbook was purchased as a duplicate order when I was in the first year of junior high school at an integrated junior high and high school. It's a set of two books. There are no markings, but the covers show some signs of use. Please refer to the photos. Thank you very much!