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Carl Sagan, Dragons of Eden: Speculations on the Evolution of Human Intelligence
animal-communication
animal-intelligence
language
sign-language
Topics:
Carl Sagan, Dragons of Eden: Speculations on the Evolution of Human Intelligence
Carl Sagan, Dragons of Eden: Speculations on the Evolution of Human Intelligence
animal-communication
animal-intelligence
communication
sign-language
Topics:
Carl Sagan, Dragons of Eden: Speculations on the Evolution of Human Intelligence