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Books about Sehlin:
Marias kleiner Esel: Eine Weihnachtslegende von Sehlin. Gunhild (2007) Taschenbuch by Sehlin. Gunhild (1000)
Wiki information Sehlin:
Richard C. Sehlin received the Technical Achievement Award in 1999 for the concept of Eastman Lamphouse Modification Filters.