References
^ George C. Blasiola (1995). 9780812035681, Barron's Educational Series. ISBN 9780812035681 (revised Jan 2014)^ George C. BlasiolaKoi : Everything about Selection, Care, Nutrition, Diseases, Breeding, Pond Design and Maintenance, and Popular Aquatic Plants by George C. Blasiola (1995, Hardcover) ISBN 9780812035681 (revised Apr 2015)
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