seminar dilaksanakan di BALLITAN Malang 22 Juli 1991 text Malang Balai Penelitian Tanaman Pangan Malang 1991 iv,45p. ills; 25 cm PENELITIAN TANAH LAHAN PASCA LETUSAN GUNUNG 631.42 631.42 INLIS000000000005327 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)