Laporan proyek studi kemungkinan pengembangan usaha tanaman pangan di Pasir Pengarayan (Riau) UNIVERSITAS RIAU text Pekanbaru Universitas Riau 1974 xvii, 80 p. : ill. ; 27 cm. Bibl.: p. 81 Universitas Riau FOOD CROPS RIAU 633.1(921.26) 633.1(921.26) UNI l 220320 20220320020348 INLIS000000000009002 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)