Schaeffer, Jakob Christian (1718-1790)
Schaeffer, Jakob Christian (1718-1790)
Schaeffer, Jakob Christian (1718-1790)
Schaeffer, Jakob Christian (1718-1790)
Schaeffer, Jakob Christian (1718-1790)
Schaeffer, Jakob Christian (1718-1790)
Schaeffer, Jakob Christian (1718-1790) Reaumur, Rene Antoine Ferchault de
Schaeffer, Jakob Christian (1718-1790)