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Surface water supply of the United States, 1961-65. Part 1 North Atlantic slope basins Volume 3 Basins from Maryland to York River ; prepared in cooperation with the States of Delaware ... [et al.]
- "Surface water supply of the United States, 1961-65 Part 1 North Atlantic slope basins Volume 3 Basins from Maryland to York River ; prepared in cooperation with the States of Delaware ... [et al.]"
- "Surface water supply of the United States, 1961-65. Part 1 North Atlantic slope basins Volume 3 Basins from Maryland to York River ; prepared in cooperation with the States of Delaware ... [et al.]"@en