TY  - BOOK
AU  - 
AU  - Metcalf, D. M., Ed.
TI  - Metallurgy in numismatics (vol. 1, 3 & 4)
U1  - 737.409 
PY  - 1980///
CY  - London
PB  - The Royal Numismatic Society
KW  - Coins
ER  -