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Robert F. Middleton

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Hydrologic Data 1969 No. 130:69 V. 1
Hydrologic Data 1966 No. 130:66 V. 1
Hydrologic Data, 1964
Hydrologic data, 1964
Hydrologic Data 1964 No. 130:63 V. 5 Appx. D-E
Hydrologic Data, 1963