Abstract
Developing nations have yet to enter the projected main phase of their population explosion. Between 1950 and 1985 they increased their numbers by 1,980 million people, whereas between 1985 and 2020 the increase is projected to be 2,783 millions. If we exclude China from the reckoning, on the grounds of that country being well on the way to a zero-growth population, the figures are 1,486 millions and 2,415 millions.

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