1. Water status and growth phonology of a Sahran shrub in north Africa;Abdallah;Afr. J. Ecol.,2007
2. Effect of time of sowing on emergence and seedling growth of Achillea fragrantissima;Al-Qarawi;Egypt. J. Appl. Sci.,1996
3. Morphology and composition of some soils under cultivation in Saudi Arabia;Bashour;Geoderma,1983
4. Physiology and Biochemistry of Seeds in Relation to Germination;Bewley,1982
5. Collenette, S. 1999. Wildflowers of Saudi Arabia. National Commission for Wildlife Conservation and Development (NCWCD). Riyadh, Kingdom of Saudi Arabia, 799p.