What has the author Dieter Petzold written?

Dieter Appelt has written:

'Bildungskooperation als Entwicklungsinstrument' -- subject(s): Education, Educational assistance, German, German Educational assistance

'Erinnerungsspur, statische Vibration'

'Dieter Appelt' -- subject(s): Railroad bridges, Centre canadien d'architecture, Exhibitions, Photographers, Architectural Photography, Cantilever bridges

'Photosequenzen, Performance, Objekte, Filme' -- subject(s): Exhibitions