Dear all, Thank you to all those who have sent their pre-registrations so far, and to those who have sent full-text papers for the conference. We are writing to let you know that *the deadline for Full-text papers to the *DDPLS 2022 <https://hamayesh.ipla.ir/en/> *International conference has been extended to Saturday 19th March.* The conference will be *free of charge* for all the participants and authors. The aim of this conference is to provide a common platform for librarians, researchers, academicians, leaders, information providers, and policymakers to share their experiences, innovative ideas, and research findings especially on the design and development of public library services. DDPLS <https://hamayesh.ipla.ir/en/> welcomes professionals, researchers, librarians from all over the world to contribute to the service design and developments of public libraries. The conference is organized by the Iranian Public Libraries Advancement Association, Iranian Sociological Association & the Iran Public Libraries Foundation. The conference language is Persian and English. The selected English papers will publish in the International Journal of Information Science and Management (IJISM) <https://www.scimagojr.com/journalsearch.php?q=21100200830&tip=sid&clean=0> Scopus Indexed Journal. *Conference Themes* Designing Services for Public Libraries - Service Design Training - Legal and Managerial Features of Services - Services for Special Groups - Designing Outreach Services - Innovation in Social Services Design Development of Public Library Services - Advertising and Marketing Services - Role & Function of Ethical Values in Service Delivery - Governance and Service Policy - Librarians and Services Development - Development of Services by Advanced Technologies - Role of Voluntary Activities in Services Development The deadlines for this conference are as follows: · Last Date of Full- text Paper Submission: *19 March 2022* · Notification of Acceptance: *11 April 2022* · Last Date of Registration: *10 May 2022* · Conference Date: *17 & 18 May 2022* Submissions can be sent by conference website at: https://hamayesh.ipla.ir/en/ *Contact:* leili.seifi@gmail.com Kind regards, Leili Seifi Scientific Secretary -- Regards, Leili Seifi, PhD Associate Professor Department of Knowledge & Information Science Faculty of Behavioral Science University of Birjand,Birjand, Iran Tel: +98 56 31026855 https://cv.birjand.ac.ir/seifi/en -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.