ATTENTION!: THIS IS A CD, NOT A PHYSICAL/PAPER BOOK!!! How To Build 4 Doerle Short Wave Sets 1938 PDF on CD CD Contents: How To Build 4 Doerle Short Wave Sets (1938): 36 pages Format: PDF, Language: English Publisher: Gernsback "Everything about all the famous Doerle Receivers." Table of contents of the book on the CD: 2-Tube 12,500 Mile "Doerle" Short-Wave Receiver More about the 12,500 mile Doerle Set The "Doerle" 3-Tube Signal Gripper Electrifying the "Doerle" 12,500 Receiver Electrifying the "Doerle" 3-Tube "Signal Gripper" Band-Spreading the 2-Tube "Doerle" Receiver Hum-Free A. C. Power Pack for Short-Wave Receivers COMPUTER REQUIREMENTS: This manual on CD will work on all PC, MAC Computers, tablets and mobile phones. The only software needed is adobe reader which in most cases is already loaded onto your computer, if not can be downloaded for free. It will be shipped by UPS/Air mail as a CD and money back guarantee! Windows and Mac compatable Important! Non US buyers please be sure that your State/Province/Region element is filled by you either in your paypal account Profile and settings/Address section or in your Bonanza account Settings/Address section when you make order because this is necessary in order that the order processing can be a little bit quicker! Thank you for your cooperation! Ringostarn Shipping is Free.