1.
2.
München [Germany] : Mitteilungen der deutschen Patentanwälte, 1978.
German | (DE 43) |
3.
München [Germany] : Mitteilungen der deutschen Patentanwälte, 1976.
German | 43 DE |
4.
[Place of publication not identified] : [publisher not identified], 1974.
German | 29 DE |
5.
6.
7.
London [England] : Trade Marks, Patents and Designs Federation, 1974.
English | 41 GB |
8.
[Heidelberg, Germany] : [Springer], 1975.
English | 34 DE |