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Patents : what a business executive should know about patents
Hoar, Roger Sherman, (1927)
A survey of the principal national patent systems
Vojáček, Jan, (1936)
Inventions, patents and monopoly
Meinhardt, Peter, (1950)
The tariff manual
Hoar, Roger Sherman, (1917)
Unemployment insurance in Wisconsin
Hoar, Roger Sherman, (1932)