年鉴,是逐年发行、概述一年内事物发展和记录最新事实以及汇集各种资料和统计数字的工具书。它为决策的科学化,管理的科学化提供依据。它是信息的社会化、公开化、民主化的一种标志。年鉴,是现代化的工具书。美国的《图书馆学和情报学百科全书》列举了13种工具书即百科全书、年鉴、指南、便览、手册、传记性资料、地理性资料、词典、书目、索引、连续 Yearbook, a yearly publication that outlines the year’s developments and records of up-to-date facts and a collection of tools for collecting information and statistics. It provides the basis for scientific decision-making and scientific management. It is a sign of the socialization, openness and democratization of information. Yearbook, is a modern tool. Encyclopedias, annuals, guides, handouts, biographies, biographical data, geographic information, dictionaries, bibliographies, indexes, enumeration of 13 kinds of reference books are listed in the United States Encyclopaedia of Library and Information Science