Doug J Porter

By Benedict J Tria Kerkvliet, Ford Foundation- Martha Uniack, Doug J Porter

By David Alan Craig, Doug Porter

Edited By Philip Eldridge, Dean Forbes, Doug Porter

By Doug Porter, Bryant Allen, Gaye Thompson

By A.N. Porter, R.F. Holland

Edited By J. M. Porter, Richard Vernon

Edited By R.F. Holland, A.N. Porter

Edited By A.N. Porter

Edited By R. Porter, T. Roberts

By S. Porter

By W. F. Bynum, Roy Porter

By John Haslam, Roy Porter