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Man - Survival
How much time does man have left? A few decades, scientist warns, unless bi
Yesterday? Tomorrow.
Man ignores survival needs, architect Ian L. McHarg says, Ames.
Which scientist do you believe?
Over-populated.
Doctor (Dr.) B. Commoner fears man doomed in 30 years.
Doctor (Dr.) P.B. Sears, retired Yale University biologist, warns of man, p
If man is to survive.
