I want to read the impairment percentages according to the AMA 6th edition
Based on your question, I believe you are looking for the AMA's Guides to the Evaluation of Permanent Impairment, 6th ed. Is that correct? We actually have online access to this title as an e-book. You can click on the link below to access the record for the book in Primo, our library catalog. Once you get to the record, click where it says "Online Access" and then sign in with your USciences credentials to access the book.
Link to catalog record: https://usciences-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=01USCIPH_ALMA5161347090003916&context=L&vid=01USCIPH_V1&search_scope=Blended&isFrbr=true&tab=default_tab&lang=en_US
If you should have any further questions or difficulty accessing the book, just let us know.