Articles by M.I. Helal (2)

Effect of Sulfur Blended N-Fertilizers on Nitrogen Use Efficiency and Quality of Lettuce Yield

K. N. Al-Redhaiman, M.I. D. Helal and R. R. Shahin

Pakistan Journal of Biological Sciences 6 ( 16 ): 1408 - 1412 , 2003

Mobilization of Pb, Zn, Cu and Cd, in Polluted Soil

A. I. Al-Turki and M.I. D. Helal

Pakistan Journal of Biological Sciences 7 ( 11 ): 1972 - 1980 , 2004

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