Studia LogicaDecember 1971, Volume 28, Issue 1, pp 117–117 | Cite asЛогические системы с импликациямиAuthorsAuthors and affiliationsЕ. КотасArticle 9 Downloads This is a preview of subscription content, log in to check access.Copyright information© Warzawa 1971Authors and AffiliationsЕ. КотасThere are no affiliations available