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War Disinfectant Now Goes to Washtub

Monopoly on Tornadoes Held by America

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A Prehistoric Tree

A Table Trick and What It Teaches

Gases Dense as Metals in Stars

Educated Snail Learns to Speed

Graduated Amplifiers for Hard of Hearing

Organization to Study Tropic Plants

New Sounding Method Improved by Coast Survey

Drug Addicts Fewer Federal Report Says

Tidal Motor Made by Bulgarian