TY - JOUR AU - Rezaeei, M. AU - Bazafshan, F. AU - Ordokhani, K. TI - The effect of planting density on yield and yield components of cowpea (Vigna unguiculata L.) JO - Journal of Plant Ecophysiology VL - 4 IS - 11 SP - 61 EP - 74 PY - 2012 DO - ER -