Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.7
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
8389
Points per Word
0.000238
Page Count
112
Points per Page
0.017857
Description
Text and drawings describe the subways, sewers, building foundations, telephone and power systems, columns, cables, pipes, tunnels, and other underground elements of a large modern city.