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Title: Specimens of talking films:- 4 1/2" length of film - "Trierg [Go to resource]
Description: Specimens of talking films:- 4 1/2" length of film - "Triergon" process (piece of first sound-on film picture made 1921); 2 3/4 " length film - "Kuchemneister" system; 3 1/4" length film - "British Accoustic" process License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1929-381 Go to resource More Like this...
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