Fitriani, E. 2018. "EF” Method to Determine Books Inventory Number on Book Acquisition at Library of Lampung Unversity case study : acquisition book at 2012 and 2013. Record and Library Journal. 2, 1 (Jan. 2018), 35–42. DOI:https://doi.org/10.20473/rlj.V2-I1.2016.35-42.