A special conference, to mark 100 years of bird ringing, entitled International Conference on the Results and Perspectives of Bird Ringing, was held in Helgoland, Germany from 29 September to 3 October 1999.
The proceedings were published in a special edition of Ardea (volume 89 part 1) which are are available on the Ardea website.
Printed copies are available from:
|NHBS Mailorder Bookstore
1-6 The Stables, Ford Road
or in German from:
|Christ Media Natur
Postfach 11 02 05
D - 32405