TY  - BOOK
AU  - Schwarz,Bruno E.
ED  - Estados Unidos.
TI  - A Description of United States postage stamps, 1847-1943 / Bruno E. Schwarz
AV  - HE6183.U54 S34
PY  - 1943///
CY  - Washington
PB  - United States Government Printing Office
KW  - Timbres postales
KW  - Topicos
KW  - Estados Unidos
N1  - "Issued by the Post Office Department from July 1, 1847, to December 31, 1943"
ER  -