| Gerald M. McWilliams, Daniel W. Brauning - Nature - 2000 - 504 pages
With clear descriptions of physiographic regions as well as 44 breeding distribution maps for the most commonly seen birds and 67 photographs of many rare and hard-to-find ... | |
| Paula Ford - Nature - 1995 - 282 pages
This book takes the reader to almost 200 parks, refuges, and hot spots for migratory and resident birds throughout Pennsylvania. Details on 7 geographical regions—including 34 ... | |
| Agriculture - 1989 - 118 pages
Set includes revised editions of some nos. | |
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