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History of the Universe eBook. 398 pages, 300 illustrations only $2.99
PressurePressure is felt when a gas or other substance is squashed. Pressure is measured by working out the force on a unit of area of the surface of the substance.
History of the Universe eBook. 398 pages, 300 illustrations only $2.99 |
eBook only $2.99 398 pages, 300 images  "I find the science fabulous...an extremely useful teaching tool." Professor David Christian Become a Citizen of the Universe  and get your free badge! Follow @WykenSeagrave |
The complete history of the Universe -- from the Big Bang to 200 my into the future
