DJ : Short for dust jacket, a protective and often decorative wrapper, usually made of paper which wraps around the binding of a book.

first thus : Indicates that this is not the first appearance of a book in print, but that this is the first appearance in a substantially different format than the true first edition. For example, a first illustrated edition of a book, or even a first paperback release of a book originally published in hard cover.

price-clipped : The portion of the dust jacket flap where the publisher prints the suggested price has been cut away. Usually this is a clean 1-2" diagonal cut made with scissors.