Gulma dan teknik pengendaliannya text Jakarta Rajawali Pers 1991 ind xii, 157 hlm ilus 21 cm Yernelis Sukman, Yakup Bibliografi : hlm. 123-128 Gulma 632.5 979-421-297-0 YOPDYOG 20090227024738.0 YOGYA-02090000033101 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)