[외국도서] The ABCs of Wireless Radio (Paperback) - A Plain Treatise on Hertzian Wave Signaling, Embracing Theory, Methods of Operation and How to Build Various Pieces of the Apparatus Employed
[외국도서] Popular Dictionary of Assyrian and Babylonian Terminology (Paperback) - A Popular Handbook of Useful and Interesting Information for Beginners in the Elementary Study of Assyriology