| #911 | Microwaves & RF. -- Cleveland : Penton Publishing, 1982-. -- ISSN 0745-2993 |
| #912 | Mineralöltechnik. -- Hamburg : Beratungsgesselschaft für Anwendungstechnik mbH, 1956-. -- ISSN 0341-1893 |
| #913 | Mix. -- Berkeley : Mix Publications. -- ISSN 0164-9957 |
| #914 | Modal analysis : international journal of analytical and experimental modal analysis. -- Blacksburg : Society for Experimental Mechanics, 1993-1996. -- ISSN 1066-0763 |
| #915 | Modelling and simulation in materials science and engineering. -- Bristol : Institute of Physics Publishing, 1992-. -- ISSN 0965-0393 print. -- ISSN 1361-651X online |
| #916 | Molecular diversity. -- Leiden : ESCOM Science Publishers, 1995-. -- ISSN 1381-1991 print. -- ISSN 1573-501X online |
| #917 | Molecular physics. -- London : Taylor and Francis, 1958-. -- ISSN 0026-8976 print. -- ISSN 1362-3028 online |
| #918 | Monatshefte für Mathematik und Physik. -- Wien : Manz, 1890-1944. -- ISSN 1812-8076 |
| #919 | Monthly weather review. -- Boston : American Meteorological Society, 1873-. -- ISSN 0027-0644 print. -- ISSN 1520-0493 online |
| #920 | Moscow University mechanics bulletin. -- New York : Allerton Press, 1969-. -- ISSN 0027-1330 print. -- ISSN 1934-8452 online |