This review is for the paperback, international 10th edition of Advanced Engineering Mathematics by Erwin Kreyszig (ISBN 9788126554232). After review, this looks identical to the hardcover, US 10th edition, including problems. It's in black and white except for the blue outer cover, and in particular it's hard to see important equations that would stand out if this book were in color. A lot of it is pretty dense and difficult to follow at times, so if this is a required textbook for you for some engineering analysis class you have (which was the case for me, at least), I wish your professor will be as good at explaining the stuff as mine was.