ISSN 1694-8068 (Print)
ISSN 1694-805X (Online)
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PDF (RUS) 1957 №3
PDF (RUS) 1957 №4
PDF (RUS) 1957 №5
PDF (RUS) 1957 №6
ISSN 1694-8068 (Print) ISSN 1694-805X (Online)