1. 1
    by Irwin, Douglas A., 1962-
    Published 1996
    Book
  2. 2
    by Irwin, Douglas A., 1962-
    Published 2020
    Connect to electronic resource
    Electronic eBook
  3. 3
    by Irwin, Douglas A., 1962-
    Published 2015
    Book
  4. 4
    by Irwin, Douglas A., 1962-
    Published 2012
    Connect to electronic resource
    Electronic eBook