Feature

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Metal Welding Methods Revolutionized by New Inventions

Physician of Future to Keep Patients Well

Lung Cancer Increases

Germ Theory of Cancer Refuted

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Many Have Immunity to Infantile Paralysis

Removal of One Idea Would Collapse Civilization, Millikan Says

Heredity Factor in Pernicious Anemia

Ancient Trade Routes Traced by Amber Finds

Tests for Color Blindness Should Be More Severe

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