Bib Data Shocks:An Introduction to Big Data for Librarians and Information Professionals: by Andrew Weiss, Lanham, MD, Rowman & Littlefield, 2018, 218 pp., $90.00 (Hardback), ISBN: 978-1-5381-0322-7, $45.00 (Paperback), ISBN: 978-1-5381-0323-4, $42.50 (E-book), ISBN: 978-1-5381-0324-1. Issue 4 (2nd October 2019) - Schumacher, Mark