George deLucenay Leon

Identifiers

• Open LibraryOL575341A

Top Subjects

• Experiments (3)
• Electricity -- History (2)
• Electricity -- Experiments (2)
• Police communication systems (1)
• Telephone -- Emergency reporting systems (1)
• Sound -- Recording and reproducing -- Amateurs' manuals (1)
• High-fidelity sound systems -- Amateurs' manuals (1)