A guide to clay modelling
German, Raymond.
Frank, GerhardKleiner TopferkursAdaptations
Schneiders, Toni.
Kutschera, Alfred.
Kretzer, Willy.
London Search Press
1971
'Original edition "Kleiner Töpferkurs" by Gerhard Frank. [Freiburg-im-Breisgau: Herder, 1970]' - note
Modeling.