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Books of the Week

Gammexane Smoke Found Not so Good for Paper

Lightweight Tractor Built for Small Farms

Milk as Sole Life Diet

Fluorescent Lights Harm

Nature Ramblings: No Sea-Serpent?

[Photograph]: Testing the Atom Bomb at Eniwetok

Playgrounds with Rubber Surfaces Are under Trial

Voice of America Jammed by 205 Soviet Stations

Cobalt Is Beneficial to Cattle and Sheep

Dogs Broadcast Reactions by Way of Radio Signals

All-Metal Planes Safe from Lightning Strokes