III · Science
An investigation of programing principles as applied to the production and utilization of filmstrips and filmstrip-type materials in natural science
Subjects
Programmed instruction · Science · Study and teaching · Filmstrips
Language
ENG
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![Cover of [William Wheeler Hubbell, authorized to apply for patents.] by United States. Congress. Senate. Committee on Patents](/img/cover/10200621-M.jpg)
