TY - BOOK AU - Dahlem, Michael. TI - Disk-halo interactions in the spiral galaxies NGC 1808 & NGC 891 U1 - 520/525(043.2) DAH PY - 1990/// PB - Rheinische Friedrich-Wilhelms Universitaet KW - Spiral Galaxies KW - Disks KW - Interactions KW - Thesis ER -