TY  - BOOK
AU  - Schmid,Paul W.
TI  - How to detect damaged, altered, and repaired stamps
U1  - 769.56/2/0973 20
PY  - 1979///
CY  - Huntington, N.Y.
PB  - Palm Press
KW  - Postage stamps
KW  - United States
ER  -