Holt graph 1970-01-01
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Holus 1970-01-01
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Watermills 1970-01-01
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Water transport infrastructure 1970-01-01
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Water wells 1970-01-01
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János Apáczai Csere 1970-01-01
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Keyer 1970-01-01
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Key (instrument) 1970-01-01
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Kneser graph 1970-01-01
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ARGO-HYTOS 1970-01-01
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Bantam (military) 1970-01-01
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Drainage tunnel 1970-01-01
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Drawdown (hydrology) 1970-01-01
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Drum stick 1970-01-01
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Dupuit–Forchheimer assumption 1970-01-01
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Dwarfism 1970-01-01
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Egyptian Public Works 1970-01-01
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Elevator shoe 1970-01-01
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Emotions in virtual communication 1970-01-01
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EPANET 1970-01-01
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