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Year: 2001
Edited by: Mauro Hrvatin, Drago Perko

Year: 1998
Edited by: Milan Orožen Adamič, Drago Perko

Year: 1993
Authors: Milojka Žalik Huzjan, Karel Natek, Drago Perko

Year: 2001
Author: Drago Perko

Year: 1995
Authors: Milan Orožen Adamič, Drago Perko

Year: 2007
Authors: Milan Orožen Adamič, Jerneja Fridl, Drago Kladnik, Miha Pavšek, Drago Perko, Peter Repolusk, Mimi Urbanc

Year: 2013
Authors: Drago Kladnik, Drago Perko

Year: 1998
Edited by: Milan Orožen Adamič, Jerneja Fridl, Drago Perko, Mimi Urbanc

Year: 2015
Edited by: Helena Dobrovoljc, Tina Lengar Verovnik