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“Implementation of Interactive Digital Marketing with the 7P Marketing Concept to Increase Customer Interest on Fly Ash and Bottom Ash Products at PT PJB UP Paiton: Penerapan Interactive Digital Marketing Dengan Konsep 7P Marketing Untuk Menaikkan Customer Interest Produk Fly Ash dan Bottom Ash di PT PJB UPPaiton”, PELS, vol. 3, Dec. 2022, doi: 10.21070/pels.v3i0.1311.