TY  - BOOK
AU  - Giovanni F. Bignami
TI  - The Mystery of the Seven Spheres
SN  - 978-3-319-17004-6
CY  - New York: 
PB  - Springer
N1  - 
Sphere 0 (or the Earth)
Giovanni F. Bignami

Sphere −1 (or of the Oceans)
Giovanni F. Bignami

Sphere −2 (or of the Nether World)
Giovanni F. Bignami

Sphere +1 (or of the Sky)
Giovanni F. Bignami

Sphere +2 (or the Moon)
Giovanni F. Bignami

Mars, Planets, Stars


Sphere +3 Inner (or of the Mars)
Giovanni F. Bignami

Sphere +3 Outer (or the Solar System)
Giovanni F. Bignami

The Sphere +4 (or the Fixed Stars)
Giovanni F. Bignami

UR  - http://link.springer.com/openurl?genre=book&isbn=978-3-319-17003-9
ER  -