text Pekanbaru Lembaga Penelitian Universitas Riau 2000 ind vi, 20 p. : ill. ; 29 cm. ; vi, 20 p. : ill. ; 29 cm. Bibl.: p. 20.-- Perp. memiliki 2 eks. Saberina Hasibuan; I Putu Sedana PONDS AGRICULTURAL LIMES RIAU 639.31:631.8 639.31:631.8 HAS p c.2 230617 20230617092430 INLIS000000000012854 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)