Below are key reference books that provide a general overview of a topic or help identify synonyms, related terms, or basic data. These sources often include references and lists of further readings.
International Encyclopedia of Environmental Politics
Encyclopedia of World Environmental History by 
Encyclopedia of Consumption and Waste by 
Encyclopedia of Global Warming and Climate Change by 
Grzimeks Animal Life Encyclopedia
Encyclopedia of Global Health by 
Encyclopedia of Asian History
Encyclopedia of China
Berkshire Encyclopedia of China
Modern Japan: An Encyclopedia of History, Culture, and Nationalism
The Encyclopedia of Contemporary Japanese Culture
Historical Dictionary of the Republic of Korea
Dictionary of the Modern Politics of Japan
