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1932
The Number 1931: Properties and Meanings
1931 is a Prime Number.
The Year 1931 AD
In the year 1931 Osho the enlightened master was born.
In the year 1931 AD Harold Edgerton invented stop-action photography.
In the year 1931 AD Germans Max Knott and Ernst Ruska co-invented the electron microscope.
1930
1932