Inayah Fitri and Durroh Humairoh 2021. ACTIVITY TEST GUAVA LEAF EXTRACT ( Psidium guajava L.) ON THE GROWTH OF Streptococcus sp. Jurnal Matematika dan Sains (JMS). 1, 1 (Feb. 2021), 9–16. DOI:https://doi.org/10.55273/jms.v1i1.76.