IDENTIFICATION OF LEPTOSPIRA STRAIN IN RAT AT LEPTOSPIROSIS AREA IN GRESIK DISTRICT, EAST JAVA PROVINCE - Ikawati, Bina; Loka Litbang P2B2 Banjarnegara, Badan Litbangkes, Kemenkes RI (Badan Penelitian dan Pengembangan Kesehatan, 2012)