purnomo beny, wisudawan muhammad baharuddin, soedirman oedojo, sulistyowati muji. GAMBARAN UPAYA TINDAKAN PENCEGAHAN COVID-19 3M DI WILAYAH PERCONTOHAN RT SIAGA SURABAYA. preventif [Internet]. 2022Sep.30 [cited 2025Sep.22];13(3). Available from: https://jurnal.fkm.untad.ac.id/index.php/preventif/article/view/438