Using fractional and rational exponents.

Duration: 10:40

Year Published: 1961

Format: 16mm

Sound: sound

Description: P: Preservation Material NT: Negative Track AC: Acetate B: 800' 16/8/9.5mm 16mm Black & White Sound 1040 Calvin Productions, Inc. Modern Learning Aids

2 users have this film:
Library of Congress, Prelinger Archives

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