SASTROUTOMO, S. S.; JURAIMI, A. S.; KADIR, J.; NAPIS, S.; TASRIF, A. MORPHOLOGICAL VARIATION OF THE ECOTYPES OF Echinochloa Crus-Galli Var Crus-Galli (L). Beauv (Barnyard Grass: Poaceae) IN MALAYSIA and INDONESIA. BIOTROPIA 2011.