1.
Tokyo [Japan] : International Association for the Protection of Intellectual Property (AIPPI), 1973.
English | 2 JP |
2.
Roma [Italy] : Biblioteca Nazionale Centrale di Roma, 1973.
Italian | 13 IT |
3.
München [Germany] : Mitteilungen der deutschen Patentanwälte, 1975.
German | 43 DE |