giang hong dinh. (2014) Plant densities and nitrogen fertilizer rates affect on growth, nitrogen use efficency and grain yield of different maize hybrids under rainfed condition of southern vietnam. Kasetsart University:ม.ป.ท.giang hong dinh. 2014. Plant densities and nitrogen fertilizer rates affect on growth, nitrogen use efficency and grain yield of different maize hybrids under rainfed condition of southern vietnam. ม.ป.ท.:Kasetsart University;giang hong dinh. Plant densities and nitrogen fertilizer rates affect on growth, nitrogen use efficency and grain yield of different maize hybrids under rainfed condition of southern vietnam. ม.ป.ท.:Kasetsart University, 2014. Print.