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Prehistoric Hunting

Flying Boat of Plywood to Be World’s Largest

Synthetic Fibers Research

Cable Controls Operation on Bulldozer Tractors

Nazis Made Peroxide

D.D.T. Spraying of Pasture Can Make Milk Poisonous

Quick-Molded Plastics

A.M.A. Health Plan Called Inadequate

Steps toward Synthesis of Penicillin Announced

Keep America in Lead

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