Rene Laennac invented which aid for doctors in 1816?

More Questions:

Which empire gave the world the Pilsner?

The person who invented machine-spun cotton candy was what kind of a doctor?

Whose best-selling diary was written by Helen Fielding?

Who wrote the novel "Little House on the Prairie"?

What does Flora refer to?

A baby guinea pig is called what?

What flowers are known as "mums"?

Meteorology is the study of what?

What was the name of the album Men at Work released in 1981?

What weather phenomenon swept Dorothy Gale to the Land of Oz?

What historical woman has been portrayed on stage and screen by Faye Dunaway, Elaine Paige, and Madonna?

In the movie "Police Academy', what was the nickname of the tallest cadet?

Which US soul singer was known as "Lady Day"?

Who was president of the US when Congress passed the first Clean Air Act?

The Declaration of Independence was adopted in the east room of what building?