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35. Daoism and ecology: ways within a cosmic landscape Cambridge, Mass. : Center for the Study of World Religions, Harvard Divinity School : c2001. GEC204
37. A companion to environmental philosophy Malden, Mass. : Blackwell Publishers, 2001. ENG406 GEC204
40. The green halo: a bird's-eye view of ecological ethics Kohák, Erazim V. Chicago, Ill. : Open Court, c2000. GEC204 ENG406
