TY  - BOOK
AU  -  Roam, Dan.,  
TI  - Back Of The Napkin : Solving Problems And Selling Ideas With Pictures
SN  - 9781591842699
U1  - 658.4?06 
PY  - 2013///
CY  - New York
PB  - Portfolio/?Penguin
KW  - Innovation & Design
N2  - Innovation & Design
ER  -