The "Latin for Children, Primer B Answer Key" by Christopher Perrin is a trade paperback book published by Classical Academic Press in 2004. This book is part of the "Latin for Children Ser." and is aimed at children studying Latin. Written in English, it covers topics in language arts and foreign language study, making it a valuable resource for young learners interested in Latin. With a clear format and engaging content, this book offers a comprehensive approach to learning Latin for children.