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Sources consultées pour l'information factuelle sur
People and Science: A Test of Time
"IMDb: People and Science: A Test of Time" Internet Movie Database, Inc.
https://www.imdb.com/title/tt0227243/reference
.
National Film Board of Canada. "NFB -- People and Science: A Test of Time" National Film Board of Canada.
http://onf-nfb.gc.ca/en/our-collection/?idfilm=17383
.