a history of the American of the American ethos in the 20th century 美国的弑母文化：20世纪美国大众心态史：a history of the American of the American ethos in the 20th century a history of italian art in the 20th century 并列题名：Study on the tradition of American radical thought in the 20th century History of Chinese historical phonological studies in the 20th century Study on the tradition of American radical thought in the 20th century Brief history of the study of Greek mythology in the 20th century a history from the 18th to the 20th century 并列题名：History of Chinese historical phonological studies in the 20th century a history of fashion in the 20th century