Ahmed, Zena, AND 		Al-saad, Kefaia.
" Effect of Benzyladenine on Growth , Flowering and Bulbs Production of Two Tulip Cultivars  ( Tulipa Spp.)" <em>Tikrit Journal for Agricultural Sciences مجلة تكريت للعلوم الزراعية</em> [Online], Volume 17 Number 1 (17 March 2019)