Becker, H.J.; Diedrichs, R.; Eversberg, B.; Rath-Beckmann, A.; Wätjen, H.-J.; Zick, W.; Zillmann, H.: ¬Das PICA-System (1992)
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- Source
- Bibliothek: Forschung und Praxis. 16(1992) H.3, S.307-330
