ATENT-REEL NUMBER PARE LLEL RETRIEVAL SYSTEM-PRPR
Xia Wuning,Bian Lei,Gu Yaofang,Chen Shaohong
New Technology of Library and Information Service . 1994, (3): 55 -58 .  DOI: 10.11925/infotech.1003-3513.1994.03.13

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