1.
2.
[Place of publication not identified] : [publisher not identified], 1988.
German | 29 DE |
3.
New York, New York : International Trademark Association, 1981.
English | 64 US |
4.
New York, New York : International Trademark Association, 1973.
English | 64 US |
5.
New York, New York : International Trademark Association, 1970.
French | 64 US |
6.