Allum, J. A. E. <br/><br/>
Photogeology and regional mapping 

 - Oxford  Pergamon  1966 
<br/><br/><label>Subjects--Index Terms: </label>Steroscopy  Difference in parallax  Adjustment of stereoscopes 
<br/><br/><label>Dewey Class. No.: </label>550  / K62