Gerard, David <br/><br/>
Attack of the 50 foot blockchain / 
David Gerard 
 - Great Britain :  CreateSpace Independent Publishing,  2017. 
 - 179 p. ; 
<br/><br/><label>ISSN: </label>9781974000067 
<br/><br/><label>Dewey Class. No.: </label>332.178  / GER