Articles

• Bacillus thuringiensis var. aizawai HD-137 as a Potential Agent for Biological Control

  Ahmed A.M. Yassein, Samia A. Abdal-Aziz

  1-6

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• Relation of Particle size with Toxicity of Calcite Particles

  Asna Baig, H.N. Sharma, Madhuri Dixit, Iqbal Ahmad, Shivani Verma, Prashant Kumar

  7-11

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• Prevalence of Cryptosporidium and Giardia lamblia in Water Samples from Jeddah and Makkah Cities

  Haytham Ahmed Zakai, Hanadi Ibrahim Barnawi

  12-17

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