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Extraction of tungsten and rhenium by basic or neutral extractants in xylene from mineral acidic media

H. Aly, S. M. Khalifa, R. Shabana, 1986 .

Oestradiol residues in chicken tissue. Influence of freezing and cooking on hormone levels in chicken

S. Abdalla, A. El-Bauomy, E. El-Neklawy, 1992 .