Question:
Billion years (Var.)
Similar Crossword Questions:
- One billion years, in geologic time
- A billion years (Var.)
- One billion years to Hubble
- One billion years, in geology
- One billion years (Var.)
- Billion years, to a geologist
- A billion years, in geology
- Division of about one billion years
- A billion years, in astronomy (Var.)
- One billion years, in astronomy
- A billion years
- Billion years, easily
- A billion years, in astronomy
- About a billion years
- A billion years, to Hubble
- One billion years
- A billion years, geologically
- One billion years, geologically
- A billion years, to geologists
- Billion years
- Troubled years, usually
- Great Brit., e.g., in years past
- Calendar that cycles 60 years called Samvatsaras
- Years in the making?
- European head of state for nearly 56 years