The Great Lakes - How They Were Formed

Depicts the work of glaciers in forming the Great Lakes thousands of years ago. Describes the presentday drainage of the lakes and the physical characteristics of Niagara Falls. Illustrates topographical changes now occurring. , L: Limited Access CP: Composite Positive AC: Acetate A: 400' 16/8/9.5mm 16mm Black & White Sound 300
Complete catalog record
Depicts the work of glaciers in forming the Great Lakes thousands of years ago. Describes the presentday drainage of the lakes and the physical characteristics of Niagara Falls. Illustrates topographical changes now occurring. NOTE: Two (or more) records have been merged together to create this data.

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Sources

  1. 16mm Filmography (legacy record) — title, year, creator, length, format, sound, description, catalog record