@inbook{landsberg_1989, title={Parasites and associated diseases of fish in warm water culture with special emphasis on intensification}, ISBN={0849347432}, booktitle={Fish culture in warm water systems: problems and trends}, publisher={Boca Raton, Fla.: CRC Press Inc}, author={Landsberg, J. H.}, editor={M. Shilo and Sarig, S.Editors}, year={1989}, pages={195} }