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Osmar Lysander Waller
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Cost of pumping for irrigation
Osmar Lysander Waller · Washington Agricultural Experiment Station
12 sayfa · 1916
Irrigation pumps / Irrigation / Costs
A report on irrigation conditions in the Yakima Valley, Washington
Osmar Lysander Waller · Washington State Agricultural College and School of Science, Experiment Station
29 sayfa · 1904
Irrigation