Related Clues:
- Prefix for sphere
- Prefix with conscious
- Sphere or system starter
- Greenpeace prefix
- "Foucault's Pendulum" author
- Sphere opening
- Prefix with 13-Across
- Tour beginning?
- "The Name of the Rose" author Umberto
- __-friendly
- ''Baudolino'' author
- ''Foucault's Pendulum'' novelist
- Prefix with gram or graph
- Prefix for gram or logical
- System lead-in