1. 1) D. L. Meadows : Toward Global Equilibrium : Collected Papers, (Cambridge, Mass. Wright-Allen Press, 1972).
2. 2) U. Thant(author) and A. Inoue(translator) : Sekai Heiwa no Tameni, (Kokusai Shijo Kaihatu, 1972).
3. 3) R. Carson : Silent Spring, (Penguin, Houghton Mifflin, Boston, 1962).
4. 4) S. Brown : The Wisdom of Science, (Cambridge University Press, 1986).
5. 5) M. Watanabe : Condorcet, (Iwanamishoten, Tokyo, 1949).