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digital reference
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Subject
English
Chinese
libr.
Collaborative
Digital Reference
Service
【美国】合作数字参考咨询服务
el.
digital reference
sequence
数字基准序列
el.
hypothetical
digital reference
connection
假想数字基准连接
telecom.
hypothetical
digital reference
connection
假设数字参考连接
libr.
IFLA
Digital Reference
Guidelines
国际图联数字参考咨询指南
telecom.
PCM
digital reference
sequence
PCM 数字参考序列
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