We are grateful for the assistance provided by several
individuals in the preparation of this manuscript. In
particular, we thank C. D. Ankney, C. K. Bluhm, R. D.
Drobney, J. L. Eldridge, R. M. Erwin, D. H. Johnson, M. Owen,
H. Pöysä, and A. B. Sargeant for their helpful comments
concerning content; J. A. Barzen, J. R. Serie, and S. G.
Simpson for allowing us to cite unpublished data; and P. S.
Berthelsen, D. E. Delnicki, L. J. Garrett, J. E. Corley, T. G.
Hanson, N. J. Dietz, C. R. Luna, D. M. Ostby, C. W. Shaiffer,
and A. S. Zimmerman for assistance in various capacities
during manuscript development.
Previous Section -- Research Needs and Oppotunities Return to Contents Next Section -- References