| #511 | Melioraciâ i vodnoe hozâjstvo. -- Moskva : Agropromizdat, 1988-. -- ISSN 0235-2524 |
| #512 | Memoirs of the Faculty of Engineering and Design Kyoto Institute, Series science and technology. -- Kyoto : Inst. of Technology, 1984-2006. -- ISSN 0911-0305 |
| #513 | Memoirs of the School of Science & Engineering, Waseda University. -- Tokyo : Waseda Univ., 1954-. -- ISSN 0369-1950 |
| #514 | Měřící technika. -- Blansko : Metra, 1950-1996. -- ISSN 0322-9173 |
| #515 | Metallurgical transactions, B, Process metallurgy. -- Warrendale : A.S.M. International, 1975-1993. -- ISSN 0360-2141 |
| #516 | Metallverarbeitung. -- Berlin : Verlag Technik, 1961-1998. -- ISSN 0026-0908 |
| #517 | Metrologia. -- Paris : Institute of Physics, 1965-. -- ISSN 0026-1394 print. -- ISSN 1681-7575 online |
| #518 | Mezögazdasági technika. -- Budapest : FM müszaki intézet, 1961-. -- ISSN 0026-1890 |
| #519 | Microgravity, science and technology. -- Dordrecht : Springer, 1990-. -- ISSN 0938-0108 print. -- ISSN 1875-0494 online |
| #520 | Microwave journal : Euro-global edition. -- Norwood : Horizon House Publications, 1964-. -- ISSN 0192-6217 |