{"id":2531,"ia_identifier":"gov.dod.dimoc.28372","programme":"dod","naid":null,"local_identifier":null,"pin":"28372","title":"BASIC TELEPHONY","year":1961,"date_raw":"1961-01-01T00:00:00Z","creator":"Department of Defense","description":"Department of Defense PIN 28372 BASIC TELEPHONY 1961 ELECTRO-MAGNETIC THEORY AS APPLIED TO TELEPHONY; COMPONENTS, OPERATION AND TRANSMISSION RANGE OF SOUND POWERED, LOCAL BATTERY, AND COMMON BATTERY TELEPHONIC SYSTEM..","licenseurl":"http://creativecommons.org/publicdomain/zero/1.0/","collections":["FedFlix","usgovfilms","newsandpublicaffairs","fav-actual","fav-dr1ft","fav-onesinglecircle","fav-retiredscholar","fav-thegreenflyingkiwi","fav-videopaul"],"ia_metadata":{"date":"1961-01-01T00:00:00Z","year":1961,"title":"BASIC TELEPHONY","creator":"Department of Defense","credits":"Uploaded by Public.Resource.Org","subject":["dod.gov","public.resource.org"],"collection":["FedFlix","usgovfilms","newsandpublicaffairs","fav-actual","fav-dr1ft","fav-onesinglecircle","fav-retiredscholar","fav-thegreenflyingkiwi","fav-videopaul"],"identifier":"gov.dod.dimoc.28372","licenseurl":"http://creativecommons.org/publicdomain/zero/1.0/","description":"Department of Defense PIN 28372 BASIC TELEPHONY 1961 ELECTRO-MAGNETIC THEORY AS APPLIED TO TELEPHONY; COMPONENTS, OPERATION AND TRANSMISSION RANGE OF SOUND POWERED, LOCAL BATTERY, AND COMMON BATTERY TELEPHONIC SYSTEM.."},"status":"us-government-work","reason":"The record names a federal body as the creating agency: Department of Defense. A work prepared by an officer or employee of the United States Government as part of that person's official duties has no US copyright (17 U.S.C. 105; before 1978, section 8 of the 1909 Act).","flags":[],"loaded_at":"2026-09-05 16:13:40.855715+00:00","downloads":1144}