This is a review of 190 years of literature on copper and its alloys. It integrates information on pigments, corrosion and minerals, and discusses environmental conditions, conservation methods, ancient and historical technologies.

"Learn About the United States" is intended to help permanent residents gain a deeper understanding of U.S. history and government as they prepare to become citizens. The product presents 96 short lessons, based on the sample questions from which the civics portion of the naturalization test is drawn. An audio CD that allows students to listen to the questions, answers, and civics lessons read aloud is also included. For immigrants preparing to naturalize, the chance to learn more about the history and government of the United States will make their journey toward citizenship a more meaningful one.