Al-Shammary, Aziz M., and Ammar S. AL- Diyny. 2017. “THE EFFECT OF IRRIGATION PERIOD AND PLANT DENSITY IN SOME QUANTITATIVE CHARACTERS FOR VARIETIES OF COWPEA (Vigna Sinensis L.) ”. Diyala Agricultural Sciences Journal 9 (2):180-92. https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/1310.