| 单词 | grey literature | 
| 释义 | > as lemmasgrey literature   grey literature  n. documentary material which is not commercially published or publicly available, such as technical reports or internal business documents. ΚΠ 1975    Q. Rev. Biol. 50 346/1  				Many references are from the soft or grey literature, such as progress reports and meeting summaries. 1995    Daily Tel. 12 Jan. 18/5  				My company specializes in the acquisition and delivery of what scientists and technologists call ‘grey literature’—technical reports and other documents that cannot be obtained through bookshops. 2010    Nature 8 Apr. 823/3  				Michael Fulford..has been piloting a study of the grey literature about Roman Britain, with similarly exciting results. < as lemmas | 
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