3
by Gruber, C.
Published 1977
Springer

4
by Gruber, Thomas
Published 2011
VS Verlag für Sozialwissenschaften

5
by Gruber, Harald
Cambridge University Press

6
by Gruber, Thomas
Published 2018
Springer Berlin Heidelberg

10
by Gruber, Helmut
Published 1996
VS Verlag für Sozialwissenschaften

12
by Gruber, Andreas
Published 1988
Deutscher Universitätsverlag

17
by Gruber, Gernot
Published 2022
Bärenreiter

18
by Gruber, Bastian
Published 2023
Manning Publications Co.