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Boserup, E. 1965 The conditions of agricultural growth : The economics of agricultural change under population pressure London , George Allen and Unwin.

Christian, J.J. ; Davis, D.E. 1964 "Endocrines, behavior, and population", Science 146: 1550-1560.

Davis, D.E. 1959 "Territorial rank in starlings", Animal behaviour 7: 214-221.

Eibl-Eibesfeldt, I. 1971 "Transcultural patterns of ritualized contact behavior" , pp. 238-246 in: A.H. Esser (ed.). Behavior and environment. New York/London, Plenum Press .

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Harper, J.L. 1970 "The population biology of plants", pp. 32-44 in: A. Allison (ed.). Population control. London, Penguin Books.

Hendrichs, H. ; Hendrichs, U. 1971 Dikdik und Elefanten. Ökologie und Soziologie zweier afrikanischer Huftiere Munich, Piper.

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1971 "Dominance and territoriality as complemented in mammalian social structure", pp. 22-33 in: A.H. Esser (ed.). Behaviour and environment. New York/ London, Plenum Press.

McBride, G. 1971 "Theories of animal spacing: The role of flight, fight and social distance", pp. 53-68 in: A.H. Esser (ed.). Behavior and environment. New York/ London, Plenum Press.

McNamara, R.S. 1972a Address to the United Nations Conference on Trade and Development Santiago, Chile, April 14.

1972 b Address to the United Nations Conference on the Human Environment Stockholm, June 8.

Meadows, D.H. et al. 1972 The limits to growth New York, Universe Books. (Report for the Club of Rome's Project on the Predicament of Mankind.)

Olin, U. 1972 "Population pressure and revolutionary movements" , pp. 133-162 in: R.S. Parker (ed.). The emotional stress of war, violence, and peace. Pittsburgh, Pa., Stanwix House.

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Schwerdtfeger, F. 1971 "Is the density of animal populations regulated by mechanims or by chance", pp. 30-42 in: I.A. McLaren (ed.). Natural regulation of animal populations. New York, Atherton Press.

Solomon, M.E. 1971 "Status of the idea that weather can control insect populations", pp. 43-50 in: I.A. McLaren (ed.). Natural regulation of animal populations. New York, Atherton Press.

Tanner, J.T. 1971 "Effects of population density on growth rates of animal populations", pp. 58-68 in: I.A. McLaren (ed.). Natural regulation of animal populations. New York, Atherton Press.

Williams, G.C. 1966 Adaptation and natural selection Princeton, NJ, Princeton University Press.