Washington (State). Office of Program Planning and Fiscal Management. (1971). Washington's water resources.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWashington (State). Office of Program Planning and Fiscal Management. Washington's Water Resources. Olympia, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWashington (State). Office of Program Planning and Fiscal Management. Washington's Water Resources. 1971.
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