"Medium Trees of Pennsylvania" is the perfect guide to identifying and learning about the variety of trees that grow in this American state. Authors - Avgenbaugh, J. I.; Ibberson, Joseph I.; Mikalitis, A. B.; Morris, S. L. - collected in one book detailed information on the appearance, biology, ecology and uses of each species of tree. Thanks to this book, the reader will be able to easily recognize different types of trees by leaves, bark and flowers, and also learn about their uses in forestry, landscape design and other areas. Middle Trees of Pennsylvania will be an excellent addition to the library of anyone interested in the nature and trees of North America.