“... method ditches or trenches was used, considering the criteria established in the Pan American Center...”
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“... resources of the old ditch Tabacundo five parishes of Cayambe and Pedro Moncayo....”
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“... in this investigation are as the ball, the pitch and clothing. Well, these are the signs of this sport that are involved...”
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“...In the canton Cayambe, in the basin of the Pisque river, there is the Pumamaqui irrigation ditch...”
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