1. Bazilevich, N. I., L. Ye. Rodin, and N. N. Rozov. 1971. Geographical aspects of biological productivity. Sov. Geogr. Rev. Transl. 12:293–317. (Transl. from Mat. V. Syezda Geogr. Obshch. USSR, Leningrad, 1970.)
2. Bolin, B. (ed.). 1971. Air Pollution Across National Boundaries: The Impact on the Environment of Sulfur in Air and Precipitation, 96 pp. (Rep. of the Swedish Preparatory Committee for the U.N. Conference on Human Environment.) Stockholm: Norstedt.
3. Bronfenbrenner, U. 1970. Two Worlds of Childhood, U.S. and U.S.S.R., 190 pp. New York: Sage Foundation.
4. Brown, L. R. 1970. Human food production as a process in the biosphere.Scient. Amer. 223(3): 160–170.
5. Clark, Colin. 1967. Population Growth and Land Use, 406 pp. New York: Macmillan.