Signal generator operation.

A: Access CP: Composite Positive AC: Acetate A: 400' 16/8/9.5mm 16mm Black & White Sound Burton Holmes Films (Chicago, Ill.) United States. Office of Education

Related films

Sources

  1. 16mm Filmography (legacy record) — title, year, creator, format, sound, description
  2. usgov-av-1974 — title, year, creator, length, color, sound, description