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Opperman, David R.
A Classification System for Siberian AEF Covers / Opperman David R.
STA IN : The Postal History of the AEF, 1917-1923 : A Handbook Compiled by the World War I AEF Study Group of the War Cover Club / A cura di Theo. Van dam. - State College : American Philatelic Society, 1980. - P. 163-207 : ill. b.n. ; 27 cm
Tipo: 111 - Analitico
| Codice: XABPO0124732
| MFN: 0411117