https://easytrickshindi.in/2020/12/lucents-gk-book-in-hindi-english-pdf-download.html?lcp_pagelistcategorypostswidget-4=4&lcp_pagelistcategorypostswidget-7=2
information and COMMUNICATION TECHNOLOGY notes for MPPSC ( सूचना और संचार प्रौद्योगिकी )