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  • seven billion by the year 2000. This unprecedented increase presents us with a situation unique in human affairs and a problem that grows more urgent with each passing day. • The numbers themselves are striking, but their implications are of far greater
  • of increase, there will be four billion people by 1975 and nearly seven billion by the year 2000. This unprecedented increase presents us with a situation unique in human affairs and a problem that grows more urgent with each passing day. The numbers