Information retrieval for hierarchical set of descriptors /
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| OCLC: | 17305104 |
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| 主要作者: | |
| 语言: | English |
| 出版: |
Warszawa :
PKiN,
1974.
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| 丛编: | CC PAS reports ;
v.138. |
| 格式: | Monograph Note that CRL will digitize material from the collection when copyright allows. |
| Item Description: | Summary in English, Russian and Polish. |
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| 实物描述: | 12 p. |