Friends: OA books and monographs are downloaded and read by thousands of people. Their reach is many time more than those which are priced. Please see this news story about UCL books: https://www.insidehighered.com/news/2018/06/01/most-popular-open-access-mono... Best. Arun http://orcid.org/0000-0002-4398-4658 http://www.researcherid.com/rid/B-9925-2009