API 1104 20th Edition (see web site below)
http://global.ihs.com/doc_detail.cfm?currency_code=USD&customer_id=2125432B240A&shopping_cart_id=2824385F2C49404C4A5B5D202E0A&rid=API1&input_doc_number=1104&country_code=US&lang_code=ENGL&item_s_key=00010421&item_key_date=920531&input_doc_number=1104&input_doc_title=
AWS D1.1 2008 Edition (see web site below)
https://www.awspubs.com/product_info.php?products_id=782&osCsid=46dfcbd897c48721487df7bf394a51b0