Bachtiar Effendi Hasibuan text Medan USU Press 2010 id iv, 304 p.: ill.; 24 cm Pupuk dan pemupukan -- Kesuburan Tanah 631.452 631.8 979-458-463-0 250804 20250804104720 INLIS000000000004125 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)