Key Thinkers on the Environment (Palmer) 2001, 2018

Weir, Jack, Holmes Rolston III 1932-, Palmer, Joy A., ed. and David E. Cooper and Peter Blaze Corcoran, advisory eds., Fifty Key Thinkers on the Environment, [260-268]. London: Routledge, 2001. New ed. with revised title: Joy A. Palmer Cooper and David E. Cooper, eds., Key Thinkers on the Environment. London, Routledge, 2018

Both editions online at: http://hdl.handle.net/10217/37719