Research on land use policies in ASEAN countries 并列题名：Research on land use policies in ASEAN countries 并列题名：Study on social housing policies in European countries Study on social housing policies in European countries research on landscape prose in Tang and Song dynasties Research on police law of Belt and Road countries Research on theories and methods of policy evaluation in western countries Research on industrialization in European and American countries Research on think tanks in selected European and American countries 并列题名：Research on theories and methods of policy evaluation in western countries