| #51 | Marine Technology Society journal. -- Washington : Marine Technology Society, 1969-. -- ISSN 0025-3324 |
| #52 | Measurement in physical education and exercise science. -- Mahwah : Lawrence Erlbaum Associates, 1997-. -- ISSN 1091-367X |
| #53 | Medicina sportiva Bohemica & Slovaca. -- Praha : Česká a slovenská společnost tělovýchovného lékařství, 1992-. -- ISSN 1210-5481 |
| #54 | Microlight flying. -- Banbury : British Microlight Aircraft Association, 1992-. -- ISSN 0968-3100 |
| #55 | Mladá fronta dnes. -- Praha : MaFra, 1990-. -- ISSN 1210-1168 |
| #56 | Model maker. -- Stanbridge : Model Aeronautical Press, 1951-1963. -- ISSN 0463-005X |
| #57 | Model maker and model boats. -- Watford : Model Aeronautical Press, 1964-1977. -- ISSN 0026-7333 |
| #58 | Montana : lezecký časopis. -- Brno : Tomáš Roubal, 1990-. -- ISSN 1212-7957 |
| #59 | Moto-revue. -- Paris : Editions Lariviere, 1913-. -- ISSN 0047-8180 |
| #60 | Motocykl. -- Praha : Motor-Presse Bohemia, 2004-. -- ISSN 1214-6129 |