Osram Valves For Broadcasting Booklet
£2.00
This is a digital PDF copy of this 24 page booklet, originally published in 1928 which has been scanned by us from our own collection. Lots of useful information on vintage valves, making it a valuable resource for enthusiasts and collectors alike.
This is a digital PDF copy of this 24 page booklet, originally published in 1928 which has been scanned by us from our own collection. Lots of useful information on vintage valves, making it a valuable resource for enthusiasts and collectors alike.
This is a digital PDF copy of this 24 page booklet, originally published in 1928 which has been scanned by us from our own collection. Lots of useful information on vintage valves, making it a valuable resource for enthusiasts and collectors alike.