Ahmed Mohamed Al-Doori, S. “Influence of Sowing Dates on Growth, Yield and Quality of Some Flax Genotypes (Linum Usitatissimum L.)”. College of Basic Education Research Journal, vol. 12, no. 1, Mar. 2013, pp. 733-46, doi:10.33899/berj.2013.Vol12.Iss1.38955.