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主
要
学科种类
primary subject category
主
要
描述符
primary descriptor
主
要
种类
primary category
书目摘
要
卡片档
bibliographic file
内容提
要
executive summary
检索
要
求
search request
检索
要
求
request
for bibliographic search
次
要
学科类目
secondary subject category
次
要
种类
secondary category
程序纲
要
procedural brief
要
求自动放弃
waiver required
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