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1987年《陕西金融·钱币专辑》(7)第46页发表了唐石父先生撰写的《产生双胎五铢原因的推测》一文，文中提及：“根据郑家相先生的论断，错范是产生双
In 1987, “Shaanxi Finance and Coin Album” (7) 第 46 页 published a paper entitled “Speculation on the Cause of Five Wounds in Twins” written by Mr. Tang Shifu. It states: "According to Mr. Cheng’s argument, the wrong paradigm is Produce double