并列题名：Study on the opening up and cooperation of the blue economy in Shandong Study on the opening up and cooperation of the blue economy in Shandong 并列题名：Study on the development strategy od the blue economy 并列题名：Study on the forming mechanism and precaution of the bubble economy 并列题名：Study on the moderate scale operation of grain production in China 并列题名：Study on the operation of national debt economy 并列题名：Report on the communication and cooperation of traditional Chinese medicine in the world