Robert (George Mason University Ehrlich Virginia USA),Harold A. (George Mason University Geller Fairfax Virginia USA),John R. Cressman (George Mason University)
(2)
John K. Beem/ Paul E. Ehrlich/ Kevin L. Easley
(1)
John M. Marzluff/ Tony Angell/ Paul R. Ehrlich (FRW)
(1)
John Muir/ Gretel Ehrlich (INT)
(1)
Paul R. Ehrlich/ Michael Charles Tobias/ John Harte (CON)
(1)