| #341 | Western Machinery and Steel World. -- Francie : Greenbae : H.M. Leete, 1921- |
| #342 | Western Metalworking. -- Spojené státy americké : Los Angeles : Jenkins Publications, 1958-1965. -- ISSN 0096-6479 |
| #343 | What's new in welding. -- Toronto : Maclean Hunter, 1992-1996. -- ISSN 1191-9833 |
| #344 | World ceramics & refractories. -- London : London & Sheffield, 1990-. -- ISSN 0959-6127 |
| #345 | World non-ferrous metal statistics. -- Velká Británie : Birmingham : British Bureau of Non-Ferrous Metal Statistics, 1948-1967 |
| #346 | World of metallurgy, Erzmetall. -- Clausthal-Zellerfeld : GDMB-Medienverlag, 2004-. -- ISSN 1613-2394 |
| #347 | Yearbook of the American Iron and Steel Institute. -- Spojené státy americké : New York : American Iron and Steel Institute, [1912-1971, 1912-1971. -- ISSN 0096-4735 |
| #348 | Yearly proceedings - Association of Iron and Steel Engineers : Reprinted from Iron and steel engineer. -- Spojené státy americké : Pittsburgh : AISE, [1938-1994], 1938-1994 |
| #349 | Z dějin hutnictví ... -- Česká republika : Praha : Národní technické muzeum, 1975-2007. -- ISSN 0139-9810 |
| #350 | Zaŝita metallov. -- Moskva : Nauka, 1965-2008. -- ISSN 0044-1856 |