Murtilaksono, Kukuh, CitraresminiAnia, YusufSri Malahayati, BachtiarTaufik, and LawaswatiDwi Mei. 2020. “Studies of Soil Erosion Using Isotop (137Cs and 210Pb Excess) at Ciesek Sub Watershed, Upper Ciliwung Watershed, Bogor”. Jurnal Pengelolaan Sumberdaya Alam Dan Lingkungan (Journal of Natural Resources and Environmental Management) 10 (3). Bogor, ID, 501-10. https://doi.org/10.29244/jpsl.10.3.501-510.