TY  - BOOK
AU  - Roy, Ashok
ED  - National Gallery (Great Britain
TI  - The national gallery technical bulletin
SN  - 9781857093209
U1  - 751.62 ROY 
PY  - 2009///
CY  - London ; New Haven
PB  - Distributed by Yale University Press ; National Gallery Company
KW  - Art -- Technique
KW  - Painting -- Conservation and restoration
ER  -