What is the missing 8th digit (depicted as a question mark) in the following ISBN-13:
9781861?72712
1
Expert's answer
2017-12-11T16:44:35-0500
Dear Mlk, your question requires a lot of work, which neither of our experts is ready to perform for free. We advise you to convert it to a fully qualified order and we will try to help you. Please click the link below to proceed: Submit order
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