[1]
Jarkani, Akhmad Sopian, and Mahdalena, “Effect of Fertilizer and Fertilizer Manure Nickerson Star Swallow on Growth Seeds Rubber (Havea brasiliensis Muell Arg) Origin Grafting: Pengaruh Pemberian Pupuk Nickerson Star dan Pupuk Kotoran Burung Walet Terhadap Pertumbuhan Bibit Tanaman Karet (Havea brasiliensis Muell Arg) Asal Okulasi”, agri. j. ilmu. pertan., vol. 4, no. 2, pp. 44–48, Dec. 2015.