Electronic reproduction. Boulder, Colo. : NetLibrary, 2004. Available via World Wide Web. Access may be limited to NetLibrary affiliated libraries. Excludes some or all of the images which were part of the original book.
This netLibrary electronic book is provided through the Access Pennsylvania Database project, a statewide library union catalog funded by the Pennsylvania Legislature and administered by the Pennsylvania Department of Education, Office of Commonwealth Libraries, Bureau of Library Development.