| #641 | Leukos. -- New York : Illuminating Engineering Society of North, 2005-. -- ISSN 1550-2724 print. -- ISSN 1550-2716 online |
| #642 | Liťe i metallurgija. -- Minsk : Belorusskij nacionalnyj techničeskij unversitet, 1997-. -- ISSN 1683-6065 |
| #643 | Logistics today. -- Cleveland : Penton Media, 2003-2008. -- ISSN 1547-1438 |
| #644 | Lubrication engineering. -- Park Ridge : Society of Tribologists and Lubrication Engineers, 1945-2003. -- ISSN 0024-7154 |
| #645 | Luft- und Kältetechnik. -- Karlsruhe : Müller, 1965-1993. -- ISSN 0024-7251 |
| #646 | Macchine e Motori Agricoli. -- Bologna : Edagricole, 1994-. -- ISSN 0024-8967 |
| #647 | Magazín stroje a mechanizácia. -- Bratislava : M.I.A s.r.o., 2006-. -- ISSN 2453-7500 |
| #648 | Magnitnaja gidrodinamika. -- Salaspils : Institut fiziki, 1965-. -- ISSN 0025-0015 |
| #649 | Magyar mezögazdaság. -- Budapest : Hírlk, 1946-. -- ISSN 0025-018X |
| #650 | Machine design : the professional journal for engineers and designers. -- Cleveland : Penton, 1929-. -- ISSN 0024-9114 print. -- ISSN 1944-9577 online |