text Bogor Balittanah 2007 Ind iv, 19 p. : ill. ; 25 cm. iv, 19 p. : ill. ; 25 cm. Bibl. : p. 17 NASUTION, Irwan FERTILIZER APPLICATION MANDAILING NATAL NORTH SUMATRA SOIL CONSERVATION TECHNOLOGY 631.8(594.42) 631.8(594.42)NASt INLIS000000000001531 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)