This book was very useful in his day. All radio repairer and electronic mechanics at that time definitely wanted this book. This book is a mandatory handle for them when repairing electronic equipment. This book is very important because at that time there was no internet that provided tubes database. Information can acquired only by phone and magazine. So the existence of this book was very important. In developing countries like Indonesia, very few have this book. Only certain people have it.
This book contains data on almost all the tubes that were popular at that time. In addition, this book also contains the tube substitutes and its replacement. Other information is the tube data schematics and its pins.
Only a few pages are uploaded. It is because that if you are interested in the contents, then you will definitely contact me and we can exchange experiences about the old world of this tube era. This book does not mention who the authors and publishers are, so I dare to share the copy for those who are interested.
If you want a copy of this book, please contact me. I will be happy to share it with you.