社會問題.

40個機會 :飢餓世界的曙光 / by: (Language materials, printed)

窮人 / by: (Language materials, printed)

厄運之地 :給崩世代的建言 / by: (Language materials, printed)

Social change

Political culture

Civilization, Modern

Economic history

Agricultural development projects

Humanitarianism

Food relief

飢荒.

貧窮.

Socialism

國際政治.

社會問題.

Civilization, Western.

開發中國家.

Democracy

World politics

社會變遷.

Hunger

Social problems

History, Modern