TY  - BOOK
AU  - Kiusalas, Richard
TI  - Perforation measurements of United States stamps
PY  - 1997///
PB  - Bureau Issues Association, Inc.
KW  - United States | Production | Perforation | Collecting -- Accessories -- Perforation Gauges | Collecting -- Identification | United States Specialist Gauge | Kiusalas Gauge | Definitive Issues | Coils | Washington-Franklin Issues | Franklin, Benjamin, 1706-1790. | Washington, George, 1732-1799. | Errors and Varieties | Covers | Canada
ER  -