A Wheel is Round
1971
Juárez
1972
Railroads and Western Expansion 1845-1865
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Destruction: Fun or Dumb?
1976
Tractor Ted Meets More Animals
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Tractor Ted Sunny Seeds
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Drugs: The First Decision
1971
Tractor Ted Down on the Farm
2017
Beyond LSD
1967
Another Chance
1945
Theory of the C-1 Autopilot, Part 1: Basic Principles
1943
The Veluwe
1923
Tractor Ted Munchy Crunchy
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Tractor Ted Combine Time
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The Swedish Troll Factory
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Cosmic Letter
1979
Living with the Atom
1957
Zimmedari - A Responsibility
2019
Eebee's Adventures - Exploring Real Stuff
2005
Eebee's Adventures - Figuring Things Out
2015