chemical substances

Shehata, S. A., A. H. Kheraba, A. E. A. EL-Hassan, and S. Abdel-Halim, "Effect of some chemical substances on artichoke3-Endogenous hormones", Egypt.J.Appl. Sci., vol. 3, issue 10, pp. 535-545 , 1995.
Abou EL-Hassan, E. A., S. A. Shehata, A. H. Kheraba, and N.H.El-Greedly, "Effect of some chemical substances on artichoke.2– Chemical composition.Egyp", Egypt.J.Appl. Sci., vol. 3, issue 10, pp. 198-208 ., 1995.
Kheraba, A. H., A. E. A. EL-Hassan, S. A. Shehata, and N.H.El-Greedly, "Effect of some chemical substances on artichoke.1-Growth and yield of head", Egypt.J.Appl. Sci., vol. 3, issue 10, pp. 186-197, 1995.
Tourism