The Complex Circulatory System

Did you know that the blood vessels in your body together are about 60,000 miles long? That would go around the earth two and half times! 

• Age Level = 9 and up
• Book Author = Lainna Callentine M.D.
• Book Material = Hardback
• Book Publisher = Master Books
• Book Series = Wonders of Creation
• Copyright = c2016
• Grade Level = 4-6