Chaiyaphol KaewprakaisaengkulGee-Clough, D.Singh, G.Pinai Thongsawatwongdi2007-11-131995-04-012007-11-131985http://hdl.handle.net/10625/14439Page 61 missingText1 digital file (101 p. : ill.)application/pdfenSOYBEANSAGRICULTURAL MACHINERYSEEDSSOIL FERTILITYTHAILANDSOIL CHEMISTRYSTATISTICAL ANALYSISPLANT PRODUCTIONTESTINGFARMERSRESEARCH RESULTSProgress report on manual soybean seeder (phase II), Dec. 1984-Apr. 1985Working Paper