TY  - GEN
AU  - Schwartz,A W
TI  - Additional philatelic errors of medical interest
SN  - 0048-9255
PY  - 1997///1218
KW  - History, 19th Century
KW  - History, 20th Century
KW  - Philately
KW  - history
N1  - Publication Type: Historical Article; Journal Article
ER  -