Pendugaan Cadangan Karbon Above Ground Biomass (AGB) pada Tegakan Hutan Alam di Kabupaten Langkat (The Estimate of Carbon Stocks Above Ground Biomass (AGB) of Natural Forest Stands in Langkat District) - Panggabean, Maurin Lis Evan; Alumni Program Studi Kehutanan, Fakultas Pertanian, Universitas Sumatera Utara Jl. Tri Dharma Ujung No. 1 Kampus USU Medan 20155 (Program studi Kehutanan USU, 2013)