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Work or Labor Class?

On-and-off De-Icing for Jet Planes Is Better

Nature Ramblings: Mountain Goats

Polio Poll May Show How It Spreads

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New Machines and Gadgets

Giant Brains Now Detect Own Mistakes

[Photograph]: Increase in Efficiency

In Science Fields

Evolution Trial Relived

Auto Diesel Engine to Power Indianapolis Racer

Life Span of Paraplegic