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Computer Drug Control

Betula to Approach Earth

Electronic Dogs Used

Scientists Face Problems

In Science Fields

Solar Energy Produces Drinkable Water in India

Polarization Measured

“Wurlanizing” May Give Shrink-Proof Wool

Rodent Nutria Becoming Pest in Southern U. S.

[Photograph]: Nuclear “Gun”

Clues from Sputnik Chunk

Front Matter