1
by Pirlet, J.
Published 1951
Springer Berlin Heidelberg

2
by Pirlet, J.
Published 1923
Springer Vienna

3
by Pirlet, J.
Published 1923
Springer Berlin Heidelberg

4
by Pirlet, J.
Published 1921
Springer Berlin Heidelberg

5
by Pirlet, J.
Published 1921
Springer Vienna