Schutzhund : Theory and Training Methods
by Susan Barwig (Author), Stewart Hilliard(Author) 
Hardcover: 256 pages 
Publisher: Howell Book House; (February 20, 1991)
 
Advanced Schutzhund
by Ivan Balabanov (Author), Karen Duet (Author) 
Hardcover: 256 pages 
Howell Book House; (June 15, 1999) 
 
Top Working Dogs: 
A Training Manual--Tracking, Obedience, Protection
by Dietmar Schellenberg. Paperback: 208 pgs. 
Publisher: Dog Behavior Consultants; 3rd ed. (Jan 1, 1994) 
 
Training Dogs, A Manual
by Konrad Most 
Paperback: 204 pgs. Publisher: Dogwise Publishing; Reprint ed. (May 1, 2000) 
 
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