TY  - BOOK
AU  - National Gallery 
AU  - Davies, Diana ed.
AU  - Shackleton, Emma ed.
TI  - National gallery technical bulletin
SN  - 1857090330
U1  - 751.03 
PY  - 1993///
CY  - London: 
PB  - National Gallery Publications, 
KW  - Visual Arts
ER  -