Sibgha Noreen, Ahmed Akrem, Muhammad Rashid, Mahmood Ahmad Sajid,, & Seema Mahmood, Kausar Hussain Shah. " 17. Study of adverse effects of drought stress on two different hybrids of maize (Zea mays L.)." Pure and Applied Biology (PAB) [Online], 7.4 (0): 1316-1325. Web. 17 Nov. 2019