Hans-Joachim Petsche

Livres
Graßmann Graßmann
Graßmann
2006
Hermann Graßmann – Roots and Traces Hermann Graßmann – Roots and Traces
Hermann Graßmann – Roots and Traces
2010
Hermann Graßmann Hermann Graßmann
Hermann Graßmann
2009
From Past to Future: Graßmann's Work in Context From Past to Future: Graßmann's Work in Context
From Past to Future: Graßmann's Work in Context
2010