TY - JOUR A1 - Peters, K. E. T1 - The Need for a Systems Approach: An Introduction to the Conference on >The Ecosystem, Energy, and Human Values< JF - Zygon. Journal of Religion and Science, Chicago (University of Chicago) Vol. 12 (No. 2, 1977), pp. 106-108. Y1 - 1977 ER - TY - JOUR A1 - Peters, K. E. T1 - Realities and Ideals in the World System JF - Zygon. Journal of Religion and Science, Chicago (University of Chicago) Vol. 12 (No. 2, 1977), pp. 167-174. Y1 - 1977 ER -