Evaluasi penanganan hasil tangkapan ikan tongkol abu-abu (thunnus tonggol, bleecker 1851) dalam rangka pemenuhan persyaratan jaminan mutu dan keamanan hasil perikanan di pelabuhan perikanan nusantara Pekalongan = Catch handling evaluation of longtail tuna (thunnus tonggol, bleecker 1851) to ensure the standard of quality insurance and safety of fisheries product in the Pekalongan archipelagic fishing port / Aprilia Winanda Miriyanti