ANALISIS EFISIENSI PEMASARAN BENIH IKAN LELE DUMBO (Clarias gariepinus) MENURUT PENDEKATAN ELASTISITAS PERMINTAAN (STUDI KASUS DI DESA SAGARACIPTA KECAMATAN CIPARAY KABUPATEN BANDUNG) - PRASETIYONO, EVA (Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung, 2018)