The document outlines the Senaka Bandaranayake Classification (SBC) scheme developed for the library of the Postgraduate Institute of Archaeology (PGIAR) in Sri Lanka. It describes the objectives of library classification systems to organize materials effectively and save user time. The SBC scheme divides materials into main classes on general subjects, archaeology, and region-specific materials. It provides schedules, notation guidelines, and advantages of the SBC including its specificity to archaeology and ease of use.