TY  - BOOK
AU  - MacDowall,David William
TI  - Coin collections: their preservation, classification and presentation 
SN  - 9231016199
PY  - 1978///
CY  - [S.l.]
PB  - UNESCO
KW  - NUMISMATICA
KW  - CATALOGACION
KW  - CONSERVACION DE MONEDAS
N1  - Bibliografía: p. 78-82
ER  -