If it is OK, could you please describe at a high-level on the de-duplication involved in mapping the following 3 links to a single book - a) https://news.ycombi

If it is OK, could you please describe at a high-level on the de-duplication involved in mapping the following 3 links to a single book - a) https://news.ycombinator.com/item?id=836633 https://news.ycombinator.com/item?id=836633 b) https://news.ycombinator.com/item?id=1527084 https://news.ycombinator.com/item?id=1527084 c) https://news.ycombinator.com/item?id=1718951 https://news.ycombinator.com/item?id=1718951 because the amazon links contained in the HN comment links are all very different but still point to the same book - "Javascript: The Good Parts".