Blooming stages of Turkish hyssop (Hyssopus officinalis L.) affect essential oil composition

Suleyman Kizil, Ozlem Toncer, Arif Ipek, Neset Arslan, Sevil Saglam and Khalid Mahmood Khawar

Acta Agriculture Scandinavica Section B-Soil & Plant Science 58 ( 3 ): 273 - 279 , 2008