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Isotope laboratory at the National Institutes of Health 1950s.
UMG22A03_230

Isotope laboratory at the National Institutes of H...

1930s sceintists in a laboratory
UMG22A04_114

1930s sceintists in a laboratory

Scientists With Microscopes
UMG20A12_404

Scientists With Microscopes

Mad Scientist In His Lab
UMG20A20_120

Mad Scientist In His Lab

Scientist With Microscope
UMG20A12_400

Scientist With Microscope

Searching For Germs
UMG20A12_394

Searching For Germs

Chemist Working In A Lab
UMG20A12_395

Chemist Working In A Lab