Παραπομπή APA

(1968). The nation's water resources: The first national assessment of the Water Resources Council. Washington, D.C: Government Printing Office.

Παραπομπή Chicago Style

The Nation's Water Resources: The First National Assessment of the Water Resources Council. Washington, D.C: Government Printing Office, 1968.

Παραπομπή MLA

The Nation's Water Resources: The First National Assessment of the Water Resources Council. Washington, D.C: Government Printing Office, 1968.

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