Media type: E-Article Title: Some remarks on free categories and free groupoids Contributor: Hasse, Maria; Michler, Lothar Published: Institute of Mathematics, Czech Academy of Sciences, 1966 Published in: Czechoslovak Mathematical Journal, 16 (1966) 3, Seite 424-445 Language: English DOI: 10.21136/cmj.1966.100741 ISSN: 1572-9141; 0011-4642 Keywords: General Mathematics Origination: Footnote: Access State: Open Access