Malthus, Thomas.
Essay on the Principle of Population / - Reprinted 1982 / - England : Penguin Books Ltd.. - p.291 :
0-14-043.206-X
Y:5x / L0
Essay on the Principle of Population / - Reprinted 1982 / - England : Penguin Books Ltd.. - p.291 :
0-14-043.206-X
Y:5x / L0