References
Holmes Rolston III
(1994)., Value in nature and the nature of value, in R. Attfield & A. Belsey (eds.), Philosophy and the natural environment, Cambridge, Cambridge University Press, pp. 13-30.
(1994)., Value in nature and the nature of value, in R. Attfield & A. Belsey (eds.), Philosophy and the natural environment, Cambridge, Cambridge University Press, pp. 13-30.