固冲汤的功用:1983d 意思

来源:百度文库 编辑:高考问答 时间:2024/05/07 14:56:33
经常看到某些文章中的注释,例如“Dust from pods pounded during seed extraction causes a respiratory reaction in some people. No hint of pollen allergies has been reported (NAS, 1983d).”其中的d表示什么。谢谢

文献,d表示前面同一年度已经有了1983a, 1983b, 1983c,其它类推