|
1.
|
Frankfurt am Main : P. Lang, c1991.
German | T 23 MAN.D |
|
|
2.
|
Paris, France : Organisation for Economic Co-Operation and Development, c2003.
English | F 636 OECD.T |
|
|
3.
|
Frankfurt am Main : P. Lang, 1999.
German | F 13 REG.K |
|
|
4.
|
Geneva, Switzerland : World Intellectual Property Organisation, 2004.
English | W A6 849(E) |
|
|
5.
|
Frankfurt am Main : P. Lang, c1998.
German | K 64 SCH.A |
|
|
6.
|
Paris : Organisation for Economic Co-operation and Development (OECD), 1987.
English | B 70 EVA |
|