• Plant phenology and its relation to the cool semi-arid condition of Sana'a 

      Abul Fatih, H. A.; Al-Ani, M.; أبو الفتح, حسين علي; العاني, مازن ( Qatar University , 1997 , Article)
      In the cool semi-arid highland areas of Sana'a a plant phenological study of forty two species revealed that there was one major outburst of plant emergence corresponding with the first period of the heavy rainfall which ...