In the first twenty-five years the population would be twenty-two millions, and the food being also doubled, the means of subsistence would be equal to this increase. In the next twenty-five years, the population would be forty-four millions, and the... The Principles of Population and Production as They are Affected by the ... - Side 6 av John Weyland - 1816 - 493 sider Uten tilgangsbegrensning -
|