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Please confirm the chapter numbers for the original four chapters should be 5 to 8 and the total number of chapters will be 21 for the second edition. I will ask our typesetters to send me the proofs for the 4 chapters.

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anonymousIs this correct?

Yes, it's fine.

At the end "four chapters" would be a little better. One-digit numbers are written out as words. "ten" is also preferred to "10".

CJ