Volume 144; Issue 4

Scientific American

Volume 144; Issue 4
1

A New Use for Radium

Mehl, Robert F.
Journal:
Scientific American
Year:
1931
Language:
english
File:
PDF, 457 KB
english, 1931
2

New Temperature Measurements of the Sun, Moon, Mars

Russell, Henry Norris
Journal:
Scientific American
Year:
1931
Language:
english
File:
PDF, 212 KB
english, 1931
3

Butterfly Farming

Taylor, Adeline
Journal:
Scientific American
Year:
1931
Language:
english
File:
PDF, 114 KB
english, 1931
4

A Machine Age ‘Milk Maid’

Tobey, James A.
Journal:
Scientific American
Year:
1931
Language:
english
File:
PDF, 370 KB
english, 1931
5

The Eyes and Ears of the Railroad

Milholland, Francis X.
Journal:
Scientific American
Year:
1931
Language:
english
File:
PDF, 1.04 MB
english, 1931
8

Radio Goes Man-Hunting

Barkley, W. M. J.
Journal:
Scientific American
Year:
1931
Language:
english
File:
PDF, 268 KB
english, 1931