Pssst! Unser Geheimnis is a 7-book series with 7 primary works first released in 1999 with contributions by Thomas C. Brezina, Rolf. Bunse, and Rolf Bunse.
#1 of 7 in Pssst! Unser Geheimnis
1999 • 1 Reader • 115 pages • 3
#2 of 7 in Pssst! Unser Geheimnis
1999 • 1 Reader • 115 pages • 3
#3 of 7 in Pssst! Unser Geheimnis
1999 • 1 Reader • 115 pages • 3
#4 of 7 in Pssst! Unser Geheimnis
1999 • 1 Reader • 114 pages • 3
#6 of 7 in Pssst! Unser Geheimnis
2000 • 1 Reader • 114 pages • 3
#7 of 7 in Pssst! Unser Geheimnis
2000 • 1 Reader • 127 pages • 3
#14 of 7 in Pssst! Unser Geheimnis
2003 • 132 pages