Poetry Oktanauli, Zikir, A.P., Pinka Taher, Margaretha Herawati and Martin Sean 2023. Effect of Robusta Coffee (Coffea Canephora) on the Degree of Acidity (pH) of Saliva. International Journal of Clinical Science and Medical Research. 3, 5 (May 2023), 97–101. DOI:https://doi.org/10.55677/IJCSMR/V3I5-02/2023.