Twenty-First International Conference on Grey Literature 'Open Science Encompasses New Forms of Grey Literature'. - German National Library of Science and Technology, Hannover, Germany on October 22-23 October 2019 / compiled by D. Farace and J. Frantzen ; GreyNet International, Grey Literature Network Service. – Amsterdam : TextRelease, February 2020. – 173 p. – Author Index. – (GL Conference Series, ISSN 1386-2316 ; No. 21).
TextRelease Conference and Publishing Services Javastraat 194-HS 1095 CP Amsterdam The Netherlands Phone +31 (0) 20-331.2420 email@example.com Amsterdam C of C No.: 34188522 VAT/BTW No.: NL001525626B80 DUNS Number 408545049