TY  - BOOK
AU  - Per Ledin
TI  - Doing visual analysis: from theory to practice 
SN  - 9781473872995
U1  - REF 302.226 L49 
PY  - 2018///
CY  - Los Angeles, Calif.
PB  - Sage
KW  - Visual analysis
KW  - Theory
ER  -