Effect of spring and autumn seeding dates and row spacings on grain yield and yield components of corn cv. Neelum Baktash, F.Y.; El Shamma, W.S. 8oard of Planning, Iraq Iraq, Board of Planning Summary of research papers The second scientific conference of the Scientific Research Foundation 6-11 Dec 1975: 31 https://eurekamag.com/research/000/644/000644274.php