John B. Gratzek

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Books by John B. Gratzek (50 max)

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Fish breeding and genetics

1992

John B. Gratzek, Paul V. Loiselle, Joanne Norton

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Fish Diseases & Water Chemistry

1991

John B. Gratzek

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Aquariology: the science of fish health management

1992

John B. Gratzek, Janice R. Matthews

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The Science of Fish Health Management: Master Volume (Aquariology Series)

1994

John B. Gratzek