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What does the book number of PEP math book stand for?
978 is EAN's book number.

7 is the area code assigned to China.

107 is the number of people's education publishing house.

186 17 is the book number of your math book.

2 is the check code calculated according to the previous digits (nine digits except 978).

G is the letter representing mathematics in China book classification (G stands for culture, science, education and sports).

1 1707 is the number assigned to this math book by PEP.