立足读者需求和时代热点开展公益讲座——以哈尔滨市图书馆“哈尔滨讲坛”为例
립족독자수구화시대열점개전공익강좌——이합이빈시도서관“합이빈강단”위례
Carrying out the Public Lecture Based on Readers' Demand and Times' Hotspot——Taking Harbin Library's "Harbin Forum" as an Example
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