Pfammatter
Revierförster
Bachtoli 18,
3911 Ried-Brig (Wallis)
Switzerland
Burchardt
Dr. dipl. Chemiker
Büelstrasse 43,
8104 Weiningen (Zürich)
Switzerland
Burchard
Geologe
Simplonstrasse 81,
3911 Ried-Brig (Wallis)
Switzerland
Kaup
Dr. sc. math.
chemin du Couchant 45R,
1752 Villars (Freiburg)
Switzerland