1.
2.
[Place of publication not identified] : [publisher not identified], 1991.
Spanish | P 1423 UNESCO 3C |
3.
Stockholm [Sweden] : Nordiskt Immateriellt Rättsskydd (NIR), 1976.
Swiss German | 3 SE |
4.
[Paris, France] : [UNESCO], 1991.
English | P 1423 UNESCO 3B |