Sommaire

Contents
On hereditary subdirectly irreducible graphs
p. 3-10
Strong decomposability of ultrafilters on cardinals with countable cofinality
p. 11-26
Zum Ladungsträgertransport in transparenten elektrophotographischen Polyvinylkarbazol: 2, 4, 7, Trinitrofluorenon-Selen-Schichten
p. 27-42
Dust in central regions of five Seyfert galaxies
p. 43-56