Book-Review - Astronomy and Astrophysics Abstracts - Index - V.51-55 Burkhardt, B. ; Esser, U. ; Hefele, H. ; Heinrich, I. ; Hofmann, W. ; Krahn, D. ; Matas, V. R. ; Schmadel, L. D. ; Wielen, R. ; Zech, G. ; Svestka, Z. Abstract Publication: Solar Physics Pub Date: November 1993 Bibcode: 1993SoPh..148..177B