并列题名：Three studies on the history of relations between Oman and China Three studies on the history of relations between Oman and China 并列题名：Study on the history of religious culture in modern China 并列题名：Letures on the history of science in ancient China 并列题名：Studies in the History of the Relations between China and Foreign Countries 并列题名：Ethics and law in the relations between man and nature 并列题名：Report on the development of relations between India and Africa 并列题名：Studies on the history of sino-foreign relations 并列题名：History of relationship between China and Russia 并列题名：Studies on the history of Thailand