R, V., Kurniawan, F., & R, D. (2019). EFFECT OF ADDING POLYVINYL ACETATE AND COCONUT SHELL ON CONCRETE. IJTI International Journal of Transportation and Infrastructure EISSN 2597-4769 PISSN 2597-4734, 2(2), 98-104. https://doi.org/10.29138/ijti.v2i2.789