6 public-domain matches

Frequency Ratio

Cover of Seismic Assessment and Design of Structures

Seismic Assessment and Design of Structures

Unknown author

Cover of Sustainable Forest Management and Natural Hazards Prevention

Sustainable Forest Management and Natural Hazards Prevention

Unknown author

Cover of Standard tables and equations in radio-telegraphy

Standard tables and equations in radio-telegraphy

Bertram Hoyle

Cover of Direction and position finding by wireless

Direction and position finding by wireless

Ronald Keen

Cover of Handbook of Electrical Methods

Handbook of Electrical Methods

The Electrical World.

The Ewing High-Frequency Alternator and Parson's Steam Engine

The Ewing High-Frequency Alternator and Parson's Steam Engine

Nikola Tesla