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Key features:
- Text written at a level accessible to struggling readers
- Diagrams that illustrate the construction methods discussed
- Photographs that highlight key features of each structure
- Fascinating size comparisons and other fun facts
- Time lines to help readers understand how one building achievement led to the next
Special Features:
- Diagrams
- Time lines
- Focus boxes
- Fact boxes
- Glossary and Index
- Sources of further information