The Concise Oxford Dictionary of Mathematics (Oxford Quick Reference)

International Edition Textbooks are permitted for sale as long as the following requirements are met:

The description clearly states, "This is an International Edition." (no abbreviations)
Seller-supplied images must be that of the International Edition, not the North American or any other edition.
The sale and distribution must not violate the copyright or trademark of the publishers of such works. International Editions may not be sold to customers in Canada unless authorized by the publisher. The publishers of International Editions generally do not authorize the sale and distribution of International Editions in Canada.
Teachers' Editions, Instructors' Editions, Study Guides, and Solutions Manuals are permitted for sale as long as the following requirements are met:

The description clearly states, "This is a Teachers' Edition." Or, "This is an Instructors' Edition." Or, "This is a Study Guide." Or, "This is a Solution Manual."
Seller-supplied ISBNs must be that of the listed Edition, not the Textbook or any other edition.
Print on Demand listings are items that are not in printed form at the time of order. Print on Demand listings are permitted for sale as long as the following requirements are met:

The description clearly states, "This item is printed on demand."
The publication date must be either the stated Print on Demand publication date or left blank. The publication date of the original works may be added to the books description.
Photocopies or Printed Copies of Digital Content are permitted for sale as long as the following requirements are met:

The items are free of copyright and in the public domain.
If the items are not free of copyright, the seller must have received prior permission in writing from the rights-holder to reproduce the content. Proof of permission must be available and provided to AbeBooks upon request.
The description clearly states, "This is a photocopy." Or, "This is a printed copy of digital content available at [name of source, (i.e. Wikipedia)]."
The publication date is left blank. The original date of publication may be added to the book's description.
Audio Books are permitted for sale as long as the following requirements are met:

The description clearly states, "This is an audio book."
The format, i.e. CD, DVD, digital format is clearly identified in the description.
The description of digital format audio books clearly states how the item will be delivered to the buyer.
ZVAB.com:

Only selected sellers and items will be listed on ZVAB.com, our website focused on German-language rare and used books. AbeBooks will determine the eligibility of sellers and invite them to list on ZVAB.com based on these criteria:

Professional sellers only (for example, based on possessing a business license).
Relevant rare and used inventory for German speaking customers.
Thorough and exhaustive description of each item.
Items sellers cannot list on AbeBooks:

Certain items are not permitted on the AbeBooks websites. AbeBooks reserves the right to remove any listing that we determine to be unacceptable in our sole discretion and to terminate sellers' selling privileges for any reason, including for sellers who fail to remove an item upon request or relist an item after it has been removed.

If AbeBooks has removed item(s) from your inventory, or your selling privileges have been terminated, you have the opportunity to appeal the decision. You can follow the appeals process outlined in Appealing the Removal of Selling Privileges.

Items With the Following Attributes are not permitted for sale on AbeBooks websites:

Any item in breach of the terms and conditions set out by, or the rights of, the original author, publisher, or rights holder.
Any item that has been pirated, illegally obtained, copied without the legal right to reproduce, or copied without obtaining permission from the rights holder.