Kajian peningkatan jaminan mutu tepung limbah ikan untuk pupuk melalui sistem hazard analysis critical control point (HACCP) : studi kasus penolakan ekspor tepung ikan Jawa Timur ke Jepang = Analysis of increasing quality assurance of fish meal from fishery waste for fertilizer through hazard analysis critical control point (HACCP) system : case study in East Java of fish meal rejection in Japan / Tri Handayani