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从描述受控、输入受控、输出受控3方面,对MARC的3种格式(UNIMARC、USMARC、CCFC)与DC的受控性进行分析比较。
The controllability of the three formats of MARC (UNIMARC, USMARC, CCFC) and DC is analyzed and compared in terms of controlled description, controlled inputs, and controlled outputs3.