Volume 21, Issue 6, November–December, 1980

ISSN: 0037-4466 (Print) 1573-9260 (Online)

In this issue (23 articles)

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  1. No Access

    BriefCommunication

    On surfaces with preassigned curvature

    Yu. D. Burago Pages 865-867
  2. No Access

    OriginalPaper

    Rigidly directed groups

    Z. I. Dimitrov Pages 868-871
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