Where does this definition of book concern come from?
This entry for book concern is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is book concern a noun, verb, or something else?
In this entry, book concern is tagged as 2n..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.