1
2
Published: Frankfurt a. M. : Brandes & Apsel, 1996
“...Wissen & Praxis...”
Book
3
Published: Frankfurt a. M. : Brandes & Apsel
“...Wissen & Praxis...”
Serial
4
Published: Frankfurt a. M. : Brandes & Apsel
“...Wissen & Praxis...”
Serial
5
6
Published: Frankfurt am Main : Brandes + Apsel, 2004
“...Wissen & Praxis...”
Book