S. Abaka, Ahmad, AND 		S. Al-Asady, Maher.
" Effect of Variety and Spraying of Humic Acid on Growth and Produc-tivity of Silk Corn (Zea mays L.) and it‘s content of some active com-pounds to the date of harvesting" <em>Journal of Kerbala for Agricultural Sciences</em> [Online], Volume 4 Number 4 (1 December 2017)