TY - SER AU - Schmidtke,Jörg AU - Zenzes,M.T. AU - Weiler,C. AU - Bross,K. AU - Engel,Wolfgang TI - Gene action in fish of tetraploid origin. IV. Ribosomal DNA amount in Clupeoid and Salmonoid fish KW - Polyploidy KW - Isospondyli ER -