Page history

Solution of the week 2

23 May 2015

• Winona

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19 May 2015

• Winona

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8 December 2009

• Marktielewestra

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• Marktielewestra

  New page: ==Pumping on your feet — the Treadle pump== Say you are a poor farmer in a rural area in a developing country. Then your best bet out of poverty is to make more money. From where? From t...

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