A public domain book is one that was either never subject to copyright or whose legal copyright term has expired. The lack of copyright can make these works available for free.
Please contact the publisher who originally published the title in this country to request reprint permissions. In most cases, this information is on the copyright page of the book itself. Permission fees vary from publisher to publisher. Permission to use material must always be requested from the publisher, even if it is assumed that the material is in the public domain.