Ismael BS. EFFECT OFCHEMICAL FERTILIZERS LEVELS (NPK) ON THE GROWTHAND FLOWERING OF TWO VARIETY OF TULIP ( Tulipa gesneriana). . DASJ [Internet]. 2013 Dec. 30 [cited 2024 Apr. 28];5(2):312-8. Available from: https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/2768