1937 AlfvÈn proposes Galactic B; 1949-1951 appreciation of polarization by magnetically-aligned dust; 1968 1st Zeeman observations; 1988 The bandwagon drives off...
1980s,90s Interferometer Disks; 1990s HST Disks
c. 1990- Big Maps, ìBig Picturesî
c. 1990s HST reminds us about Erosion & Landfill
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