Study of Soil Infiltration in Various Fields in Durin Tonggal Village Experimental Plots Pancur Batu Subdistrict Deli Serdang District - Hutabarat, Andrean Hendratmo; Program Studi Keteknikan Pertanian Fakutas Pertanian USU Universitas Sumatera Utara (Universitas Sumatera Utara, 2015)