Twigg How to keep Koi : an essential guide / David Twigg. - New York Howell Book House 2000. - 141p. col., ill. 21cm - Interpet handbooks . Includes index p.136 - 140 ISBN: 0764562428 Subjects--Topical Terms: Koi Dewey Class. No.: 639.34 TWI 2000