Growth Responses of Arben (Rubus fraxinifolius Poir.) Seedlingto Various Planting Media Respon Pertumbuhan Bibit Arben (Rubus fraxinifolius Poir.)pada Berberapa Jenis Media Tanam - Muhammad Imam, SURYA; Indonesian Institute of Sciences Sindanglaya, PO. Box. 19 SDL Cipanas – Cianjur 43253 Jawa Barat, Indonesia (Biospecies, 2012)