Prange, H. (Ed.)(1989).
Der Graue Kranich.
2nd ed. A. Ziemsen Verlag, Wittenberg Lutherstadt.
(Paperback; 205x145mm. ISBN: 3-7403-0227-5. In German.
272 pages. 8 colour pictures,44 black & white pictures; 108 Figures, 48 Tables)