Παραπομπή APA

(1966). A directory of information resources in the United States: Water. Washington, D.C: U.S. Government Printing Office.

Παραπομπή Chicago Style

A Directory of Information Resources in the United States: Water. Washington, D.C: U.S. Government Printing Office, 1966.

Παραπομπή MLA

A Directory of Information Resources in the United States: Water. Washington, D.C: U.S. Government Printing Office, 1966.

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