the.com/library science

means The academic discipline covering how information and documents are catalogued, stored, retrieved, and managed so people can actually find what they need.

from From Latin 'liber' meaning the inner bark of a tree (once used as a writing surface) and 'librarium,' a bookcase — the same root gives us 'library.' 'Science' comes from Latin 'scientia,' knowledge. The phrase itself is a 20th-century coinage, emerging as library work professionalized into a formal field of study with its own theory, taxonomy, and degree programs, rather than being treated as a mere clerical craft.