Industrial Testing, Etc.
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Testing effect of sun and rain on industrial finishes, the Diesel injector, explanation of business cycle, relationship of demand for consumer and durable goods, photography through telescope, safety glass.
Sources
- Bell & Howell Filmosound Library Catalog of Educational Motion Pictures, 1942 — title, creator, length, format, color, sound, genre, description
Record added 2026-09-26 21:16:36