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ordentliche Erhaltung #40859
on offer for the first time since 2009 #44079
contains numerous interesting notes on old German uses
otherwise in good condition #36320
Heinle, Dr. K., Spektralphotometrische Farbmessungen in der Philat ... Condition:see description (tbd) ordentliche Erhaltung #40859Heinle, Dr. K., Spectrophotometric color measurements in philately, 1993, introduction to the color measurement method developed by Dr. Heinle, 45 pages, with illustrations, small edition, only published as a special print for the circular 108 of the ArGe Thringen Sa, SBZ OPD edition, very well preserved, signed by the author #46013
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