[LIS-Forum] Want to know about library stock verification

Respected sir I m a newly assigned librarian in a college. They give me a work of stock verification eventhough there is no classification and catalogue system is used. That is a traditional library which used accession number for charging discharging. By using this traditional way lot of a stock was lost and misplaced. And Somewhere there accession numbers were neither stamped on books. Please suggest me some ways to do this challenging work and help me to find some way to organize that library and for stock verification in this kind of circumstances. Warm Regards Amrinder kaur