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1 result for "Gerrit C. Zwart d.b.a. Visual Sciences" in Creator.

Found in catalogs (2)

• Educational Screen 1954,1955,1956 — page 562

  …Victor Aniniutograph Corporation Davenport, Iowa Visual Sciences \ Mr. Gerrit Zwart, Box 599E. Suffern, N Y. lale Iniversity Press Film Service 386 Fourth Ave., New…

• Educational Screen 1938 — page 270

  …The Visual Sciences film slide series are all prepared and produced by Mr. Gerrit C. Zwart, principal of Suffern Junior High School and head…