R.Richard Ritti <br/><br/>
The Ropes to skip and the ropes to know  
R.Richard Ritti 
 - New York  John wiley & sons inc  1994 
 - 300 
<br/><br/><label>ISBN: </label>0471585939 
<br/><br/><label>Dewey Class. No.: </label>650.1  / RIC