Here are the files.
Here's a pedia entry:
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#BLDG_Shadouf
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^Allows population size to increase in cities where built.
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^Must be near water.
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^The [shadouf] is a simple tool requiring the presence from two to four men.
It is composed of a long suspended pole maintained by a weight at an end and equipped with a
bucket attached at the other end. This bucket is designed to raise nearly two meters of water.
It can irrigate a little more than one third of acre in 12 hours.
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Enjoy!
but believe me this is much better then my first 2 attempts. 
