Cerezo, German A. Economic analysis of effluent control from catfish ponds /by German A. Cerezo and Howard A. Clonts - Auburn : Alabama Agricultural Experiment Station, 1994. - 39 p. - Bulletin ; 621 . - Alabama Agricultural Experiment Station . - Bulletin ; 621 . LCCN: 84075 Subjects--Topical Terms: Bagre.Piscicultura.