1. ?If the present rate of population growth were to be maintained, the population would double approximately every thirty-five years. In less than 700 years there would be one person for every square foot on the surface of the earth; in less than 1200 years the human population would outweigh the earth; in less than 6000 years the mass of humanity would form a sphere expanding at the speed of light.? Coale, J., ?The History of the Human Population,?Scientific American, 1974,231(3). 51. ?The world has cancer and the cancer is man.? Mesarovic, M., and Pestel, E.,Mankind at the Turning Point. New York, E. P. Dutton, 1974, p. 1.
2. Barnett, L., ?U. S. Population Growth as an Abstractly Perceived Problem,?Demography, 1970,7, 60.
3. Fawcett, J.,Psychology & Population. New York, The Population Council, 1970, p. 1.
4. Kiser, C., and Whelpton, P., ?Social and Psychological Factors Affecting Fertility,?Milbank Memorial Fund Quarterly, 1958,36, 318.
5. Milton Rokeach defines instrumental values as values concerning ?modes of conduct? as opposed to ?end-states of existence.? Instrumental values may describe either questions of morality or competence. Rokeach, M.,The Nature of Human Values. New York, Free Press, 1973, p. 8.