Published in Bulletin Br Orn Club, in 1974, in volume 94, pages 42-49

Created: 2013-01-29, modified: 2013-01-29

Published in Bulletin Br Orn Club, in 1974, in volume 94, pages 69-71

Created: 2013-01-29, modified: 2013-01-29

Published in Bulletin Br Orn Club, in 1974, in volume 94, pages 145-150

Created: 2013-01-29, modified: 2014-03-05

Published in Bulletin Br Orn Club, in 1974, in volume 94, pages 163-164

Created: 2013-01-29, modified: 2013-01-29