TY - BOOK TI - Utilization of Plumeria rubra L. (Frangipani) petal extract and bougainvillea spectabilis Willd. (Bougainvillea) petal extract as natural ink for highlighter AV - STM 2024 048 PY - 2024/// KW - Plumeria rubra L. (Frangipani) petal extract KW - Bougainvillea spectabilis Willd. (Bougainvillea) petal extract KW - Highlighter ink KW - Natural sources ER -