Grego, Peter <br/><br/>
Astronomical cybersketching  observational drawing with PDAs and tablet PCs 
Peter Grego                                                 
 - New York  Springer  2009 
 - xviii, 219p. 
<br/><br/><label>ISBN: </label>978-0-387-85350-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cybersketching<br/>Observational drawings
<br/><br/><label>Universal Decimal Class. No.: </label>12:21.0  / GRE