Tangnga Layuk, Rhamatya, Guruh Prihatmo, and Dwi Aditiyarini. 2022. “STUDI KOMPARASI KANDUNGAN TIMBAL PADA KANGKUNG (Ipomea Aquatica Forsk.) DARI PASAR TRADISIONAL DAN SUPERMARKET DI YOGYAKARTA: Comparative Study of Lead Content in Kangkung (Ipomea Aquatica Forsk.) from Traditional Markets and Supermarkets in Yogyakarta”. Biospecies 15 (2):47-54. https://doi.org/10.22437/biospecies.v15i2.13787.