"Hertfordshire" is a book by scientist Richard Lydecker, which tells about the English county of the same name. In this detailed work, the author covers the history, natural conditions, geography and cultural features of the region. This book gives the reader an in-depth look at all aspects of Hertfordshire life, from ancient castles and villages to modern towns. Vivid illustrations and detailed information make this book an essential source of knowledge for anyone interested in the history and culture of this region.