George deLucenay Leon

Subjects

Juvenile literature, Experiments, History, Electricity, Amateurs' manuals, Discovery and exploration, Electricity, experiments, Electronic apparatus and appliances, Electronics, Emergency reporting systems, Explorers, Furniture making, High-fidelity sound systems, Paper work, Paperboard, Police communication systems, Power resources, Pre-Columbian, Recording and reproducing, Signal generators, Sound, Sources d'énergie, Telephone, Testing

Places

America