She researched some of the places Darwin visited on his trip on the ship H.M.S.Beagle in the eighteen thirties.

VOA: special.2009.02.27

Researchers have known since the nineteen thirties that the actively growing tip of a plant releases a hormone called auxin.

VOA: special.2009.10.13

Ben Bernanke led the central bank through extraordinary efforts to contain the worst economic crisis since the nineteen thirties.

VOA: special.2009.08.28

Most of the songs about this season were written in the nineteen thirties and forties by famous modern composers.

VOA: special.2010.03.15

That is all I know." Here is Billie Holiday singing a popular song of the Nineteen thirties, "More Than You Know."

VOA: special.2010.02.28

These comedies, with plenty of songs, were a popular form of entertainment in the nineteen twenties and nineteen thirties.

VOA: special.2009.02.15

In the late nineteen thirties, he started to collect small pieces of paper including food paper packaging, paper cups and book pages.

VOA: special.2010.04.14

Professor Warren Schmaus of the Illinois Institute of Technology says the union of evolution and genetics only started around the nineteen thirties.

VOA: special.2009.12.01

The verb "to lobby" first appeared in print in the United States in the eighteen thirties, according to a website about Washington.

VOA: special.2010.09.27

He brought attention to singers like Woody Guthrie and Pete Seeger in the nineteen thirties and forties.

VOA: special.2010.01.18

They made many funny movies in the nineteen thirties and nineteen forties that are still popular today.

VOA: special.2009.07.19

In the early nineteen thirties, a music producer, John Hammond, heard Billie Holiday sing in a nightclub.

VOA: special.2011.07.17

Jack Benny became famous nationwide in the nineteen thirties as a result of his weekly radio program.

VOA: special.2009.10.11

Woody Guthrie was a voice for labor unions and striking workers and families beaten down by the Great Depression in the nineteen thirties.

VOA: special.2009.07.27

He collected thousands of songs in the nineteen twenties, thirties and forties to save for future generations.

VOA: special.2010.01.25

And the bitterness helped lead to the rise of fascist dictator Adolph Hitler in the nineteen thirties.

VOA: special.2010.11.11

In the nineteen thirties and nineteen forties, Louis B.Mayer was the most powerful businessman in Hollywood.

VOA: special.2009.05.31

He wrote songs for more than fifteen movies from the nineteen thirties to the nineteen fifties.

VOA: special.2009.12.20

The paintings in this exhibit tell an important story about American life during the nineteen thirties.

VOA: special.2009.03.23

In the early nineteen thirties, a music producer,John Hammond, heard Billie Holiday sing in a nightclub.

VOA: special.2010.02.28

Hundreds of thousands of people traveled this Mother Road during the Great Depression of the nineteen-thirties.

VOA: special.2010.01.11

During the nineteen thirties, President Hoover appointed him chief of staff of the Army, one of the most important jobs in the American military.

VOA: special.2010.07.02

This area of the world was a major supplier of these resources in the nineteen thirties.

VOA: special.2011.05.26

But the father lost his money in the great economic Depression in the nineteen thirties.

VOA: special.2009.11.29

By the nineteen thirties, some of the possible record-making skyscrapers were being designed with spires.

VOA: special.2010.03.31

During the nineteen thirties and forties in Havana, Celia heard many kinds of music.

VOA: special.2009.04.19

Leaders of the Group of Twenty have now met three times in less than a year to deal with the worst recession since the nineteen thirties.

VOA: special.2009.09.26

The first known European settlement on Poplar Island was established in the sixteen thirties.

VOA: special.2009.10.06