Adhikari, R., Shrestha, Y., Amatya, I.M. and Motra, G.B. 2021. Controlled substitution of coarse aggregate with waste glass and syringe needle in M20 concrete. Journal of Innovations in Engineering Education. 4, 2 (Dec. 2021), 117–122. DOI:https://doi.org/10.3126/jiee.v4i2.39308.