Gold Open Access 6: 2015-2020

Gold Open Access 6 covers DOAJ-listed journals as of 1/1/2021 and articles 2015-2020: more than one million articles in 2020. Please see the book, available as a free pdf at https://waltcrawford.name/goa6.pdf or as a color paperback at https://www.lulu.com/en/us/shop/walt-crawford/gold-open-access-2015-2020-articles-in-journals-goa6/paperback/product-2ndqwe.html?page=1&pageSize=4 NOTE: Nine journals with fees had erroneous "n" status. (It's likely that another nine journals with no fee had "f.") The dataset has been corrected to match the master spreadsheet and reloaded on 9/15/2021. Thanks to Lisa Janicke Hinchliffe for pointing out this error.