इसकी खोज करें:: टाइटल लेखक विषय सीरीज़ कॉल नंबर जो इससे प्रारंभ होता है: 10 20 30 50 100 प्रति पेज < पिछले 10 शीर्षक अगले 10 शीर्षक > शीर्षकों को ब्राउज़ करें # Simple machines. 70 SEE ALSO narrower term: Inclined planes. 17 SEE ALSO narrower term: Levers. 24 SEE ALSO narrower term: Pulleys. 24 SEE ALSO narrower term: Screws. 14 SEE ALSO narrower term: Wedges. 17 SEE ALSO narrower term: Wheels. 31 Simple machines -- Engineering. 2 Simple machines -- Experiments. 10 Simple machines -- Experiments -- Juvenile literature. 9 Simple machines -- Fiction. 3 Simple machines -- Juvenile fiction. 5 Simple machines -- Juvenile films. 10 Simple machines -- Juvenile literature 140 Simple machines -- Popular works. 1 Simple machines -- Programming -- Juvenile literature. 2 10 20 30 50 100 प्रति पेज < पिछले 10 शीर्षक अगले 10 शीर्षक >