Habibi, Hasan, and Ghasem Hosein Talaei. 2014. “Effect of Biological Phosphate and Chemical Phosphorus Fertilizer on Yield Quality and Quantity of Ajowan (Carum Copticum) Medicinal Plant”. Agricultural Advances 3 (3):74-80. http://sjournals.com/index.php/aa/article/view/721.