Downstream Development Of A Citronella-Based Mosquito Repellent Spray As A Preventive Effort Against Dengue Fever In Ngrejeng Village, Tuban: Hilirisasi Produk Spray Anti Nyamuk Berbasis Ekstrak Sereh Sebagai Bentuk Upaya Pencegahan Demam Berdarah Di Desa Ngrejeng, Tuban. DJPKM. 2026;10(1):211-218. doi:10.31849/dinamisia.v10i1.29405