Raethel Heinz-Siqurd

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
The New Duck Handbook: Purchase, Care and Feeding, Health, Breeding; Understanding Ducks Behavior	978-O-812O-4O88-3 (O-812O-4O88-O)	1989	Heinz-Sigurd Raethel