How it works

Details
- OL Work ID
- OL17315024W
Subjects
Design & technologyScienceEncyclopedias, JuvenileJuvenile NonfictionChildren's 9-12 - TechnicalChildren's Books/Ages 9-12 ScienceChildren: Grades 2-3TechnologyTechnology - How Things Work/Are MadeEncyclopediasGeneralScience, popular worksTechnology, dictionaries