| Peter Keetman Schneegestöber 1969 Gelatin silver print 30,4 x 23,3 cm (mat) Van Ham Fine Art Auctions Auction, Photography, 9 December 2011, Sale: 307, Lot: 1580 LL/44862 Peter Keetman. fotoform. Ed.: F.C. Gundlach. Berlin: Verlag Dirk Nishen, 1988. Cf. fig. p. 97.
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