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Educational194420 min320×240

Principles of Refrigeration

Federal Security Agency

Education

At the Internet Archive

Clips are not offered for this film: the US renewal records do not settle it.

Not offered: its uploader marks it public domain, and the US Copyright Office's records do not settle that it is (a record that may be another film's, a film first published abroad, a year when renewal was automatic, or a country they do not name). Unclear is not offered. Open it at the Internet Archive.

About

Federal Security Agency U.S. Office of Education Division of Visual Aids

Principles of Refrigeration AVA12779VNB1

The principles of refrigeration explained.

Human-made No record of this work says a model made it. What this means.

Archive
Internet Archive, in FedFlix: US government films
Licence or status
Public domain (Creative Commons dedication), as the Internet Archive states it.
Credit
Federal Security Agency
Language
English
Who can watch
The archive gives no rating. Invisible Network shows it to Tweens profiles and older, judged from its collection and subjects. How films are placed