by
Bailey, Lee Worth.
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Inventions -- History.
by
Mann, J.
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highlights the colourful characters behind the inventions and the huge improvements in quality of life and
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by
Shectman, Jonathan, 1972-
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household inventions -- Heat is a form of energy, not the element caloric -- Hydrodynamics -- Hydrogen is an
by
Krebs, Robert E., 1922-
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humans who lived from before recorded history to the Middle Ages. Krebs travels through the ancient
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