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The 5-Second Trick For teknologian tutkimuskeskus vtt oy

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[42] From prehistoric periods, Egyptians most likely applied the strength of the yearly flooding of your Nile to irrigate their lands, progressively Discovering to regulate Substantially of it through purposely built irrigation channels and "catch" basins.[forty three] The traditional Sumerians in Mesopotamia applied a fancy procedure of canals and levees https://julianm867ujk6.cosmicwiki.com/user

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