“KANDUNGAN BEBERAPA POLUTAN DAN KADAR DEBU PADA DAUN KETAPANG (Terminalia catappa L.) DI KOTA SAMARINDA PROVINSI KALIMANTAN TIMUR: The Pollutant and Dust Contents in the Leaves of Terminalia catappa L. in Samarinda City East Kalimantan Province”, perennial, vol. 17, no. 2, pp. 55–61, Nov. 2021, doi: 10.24259/perennial.v17i2.13965.