Treuenfels, C.-A. v. (1989).
Kraniche, Vögel des Glücks.
Rasch und Röhring Verlag. Hamburg and Zürich.
(Hardback; 280x217mm. 1st edition ISBN: 3-89136-198-X. In German. 107 pages. Many colour pictures.)
(2nd edition (1998)  ISBN: 3-89136-653-1. In German. 272 pages. Many colour pictures.)

Still available through: 
Kranich Informationszentrum
Lindentraße 27, Groß Mohrdorf,
D-18445, GERMANY. (Price 33€)
e-mail: Gruidae@aol.com