Report of the twenty-third session, Czechoslovakia, 1968.
| Corporate Author: | |
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| Format: | Conference Proceeding Book |
| Language: | English French German Italian Russian Spanish |
| Published: |
Prague :
Academia,
1968-70.
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| Subjects: |
| Item Description: | English, French, German, Italian, Russian, or Spanish. Some volumes have title: Proceedings of sections, others entitled Proceedings of symposiums. |
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| Physical Description: | 20 volumes : illustrations, maps. ; 24 cm. |
| Bibliography: | Includes bibliographies. |