The Patent History of the Phonograph, 1877-1912

[Juanma]

Estimados colegas busco este interesante libro no sé si alguien podría proporcionarme una copia, o tiene algún ejemplar a la venta, un saludo

[phonogfp]

English translation:

"Dear colleagues, I am looking for this interesting book. I don't know if anyone could provide me with a copy, or has a copy for sale. Greetings."

 

This is the Allen Koenigsberg book, which appeared in two editions.

 

George P.