ANALISIS EFISIENSI PEMASARAN BENIH IKAN LELE DUMBO (Clarias Gariepinus) MENURUT PENDEKATAN ELASTISITAS PERMINTAAN (STUDI KASUS DI DESA SAGARACIPTA KECAMATAN CIPARAY KABUPATEN BANDUNG): The Efficiency Marketing Analysis of Cat Fish Seed (Clarias Gariepinus) According Demand Elasticity Approach (A Case Study at Sagaracipta Village Ciparay Sub Regency Bandung Regency). AKU 2018, 2 (1).