“Kepadatan Cacing Tanah pada Lahan Pertanian Tomat Terpapar Pestisida di Desa Ampreng, Kecamatan Langowan Barat - Provinsi Sulawesi Utara (Earthworm Density in Tomato Farming Exposed to Pesticides at Ampreng Village, Langowan Barat Sub District – North S”, JBL, vol. 5, no. 1, Feb. 2015, doi: 10.35799/jbl.5.1.2015.7045.