Schmid, Paul W.
How to detect damaged, altered, and repaired stamps / by Paul W. Schmid. - Huntington, N.Y. : Palm Press, c1979.
Postage stamps--United States.
769.56/2/0973
How to detect damaged, altered, and repaired stamps / by Paul W. Schmid. - Huntington, N.Y. : Palm Press, c1979.
Postage stamps--United States.
769.56/2/0973