Title: Machines and structures
Subjects: Models, Juvenile literature, Buildings, Toy and movable books, Structural frames, Blocks (Toys), Machinery, Specimens, Science & Technology - Machinery, Technology - Machinery, Games & Activities - Puzzles, Juvenile Nonfiction, Children's 4-8 - Technology, Children's Books/Ages 4-8 Nonfiction, Children: Grades 3-4, Architectural models