Social history - 20th century.

Sound in the age of mechanical reproduction by: (Electronic resources)

The Lucky Few = Between the Greatest Generation and the Baby Boom / by: (Electronic resources)

Essays on twentieth-century history by: (Electronic resources)

Radio- History- 20th century.

Demographic anthropology.

Social history- 20th century.

Mechanization- History- 20th century.

History, Modern- 20th century.

Popular culture- History- 20th century.

Economic history- 20th century.

Population Economics.

Listening- History- 20th century.

Demography.

Hearing- History- 20th century.

Sociology.

Social ecology.

Sound- Political aspects- 20th century.

Social Sciences, general.

Sound- Economic aspects- 20th century.

Generations.

Generation X.

Sound- Social aspects- 20th century.

World politics- 20th century.

Twentieth century.