SAMANIAN, Mosayyeb; KHOSROPANAH, Akram. A Study Of The Application Of Marketing Practices In The Provision Of The Information Services Based On 4Ps Marketing Mix Model. Case Study: Academic Libraries In North Khorasan Province. Qualitative and Quantitative Methods in Libraries, [S.l.], v. 5, n. 4, p. 755-775, apr. 2017. ISSN 2241-1925. Available at: <>. Date accessed: 16 july 2019.