(Reference)
Leister R. Brown: "Global White Paper 1998-99" and "Global White Paper 1993 - 94"
National Land Agency: "Water Resource in Japan" (1998 and 1994)
World Resource Research Center "World Resources and Environment 1992 - 93"
Junko Nakanishi: "Environmental Strategy for Water"
Shigenori Maruyama and Yukio Isozaki: "History of Earth in Relation to Living Creatures"
Industrial Research Center "Research on Economic Development and Human Resources"
Atushi Ohtomo and Haruo Sagaza: "Urbanization of Populations in Asian Countries"
United Nations: "The State of World Population"
Sandra Postel and Zenbei Uchijima "Politics of the Shortage Era-Torn Water Resources"
Food and Agriculture Organization (of the United Nations): "Rome Declaration on World Food Security and World Food Summit Plan of Action"
Hiroyuki Ishi "Report on the Global Environment"
(APDA): "Comparative Study of Population Policies in Asia-Focus on Eight Asian Countries - "