You choose the country of origin where the body of the book was printed, and ignore the other information. Let common sense prevail. Customs is not looking for small-scale individual exporters to compile highly detailed lists of the origin of every single element that could be present in a manufactured article. This is simply a courtesy coding, to speed up the clearance of goods.
With the growth of internet shopping, the number of parcels crossing borders has increased beyond anyone's expectations, and customs offices have been groaning under the weight of dealing with thousands of individual boxes and envelopes containing articles that needed to be cleared. A far cry from years ago, when things tended to cross borders in bulk, in bond, each shipment (having huge dollar values) presented by the truck/rail car/plane/boat/container load, with manifests and bills of lading, and the customs brokers preparing all commercial paperwork for clearance.
Here are what I see as the important things: A clear, readable label, properly protected from the elements (labelopes, free from Canada Post), with a breakdown of different classifications of items, 6 digits of HS code, a country of origin, and a value. This should be substantiated by a commercial invoice included behind the label inside the labelope, where it is available to Customs for inspection. If you want information about what is permitted as imports, Canada Post has a section of information about each country under "Tools">"Find Customs Information". Under the tab for International, you will find information listed under each country about import restrictions and prohibited goods.
Do not be tempted to include a Certificate of Origin, and do not try to go beyond the six digits required of you - you are then presenting yourself as an expert, which most eBay sellers are not. When in doubt, use the KISS principle.
