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pro vyhledávání: '"Paul R Achenbach"'
Autor:
Paul R. Achenbach
Publikováno v:
Physics Today. 2:18-23
Greek and Roman architects used chimneys in kitchens and baths, though they took great care to conceal them from view. Yet it was not until the twelfth century that the practice of allowing the smoke from a fire to pass out through a hole in the roof