TY - JOUR AU - Naji, T. AU - Hosseinzadeh sahafi, H. AU - Rezaee, S. TI - Effects of Silymarin and 17β estradiol on gonadosomatic index and histological changes of oocytes in female Three spot Gourami. (Trichogaster trichopterus) JO - VL - 6 IS - 4 SP - 69 EP - 79 PY - 2012 DO - ER -