Zirconium selenite and thorium tellurite cation exchangers: Separation of some metal ions

by Negussie Retta, Tezera Sisay
Published 1994-01-01

Zirconium antimonate: Ion-exchange separation of some metal ions

by Tesfaye Abdulkadir, Negussie Retta
Published 1989-01-01

Synthesis and characterization of some derivatives of 2-t-butyl-1,3,2-diazaboracyclopentane ring system

by Negussie Retta, Robert H. Neilson
Published 1999-12-01

Synthesis and characterization of some derivatives of 2-t-butyl-1,3,2-diazabora-cyclohexane ring system

by Negussie Retta, Robert H. Neilson
Published 1999-06-01

N-phosphyl derivatives of 2-t-butyl-1,3,2-diazaboracycloalkane ring system

by Negussie Retta, Robert H. Neilson
Published 2000-12-01

Synthesis of complexes of uric acid with group I and II B metals

by Olga Kovatchoukova, Negussie Retta, Akalu Terfa
Published 1996-01-01

Assessment of Microbiological Safety and Quality of Minced Meat and Meat Contact Surfaces in Selected Butcher Shops of Addis Ababa, Ethiopia

by Kibrom Zerabruk, Negussie Retta, Diriba Muleta, Anteneh T. Tefera
Published 2019-01-01

<b>Synthesis and characterization of some metal complexes of a Schiff base derived from ninhydrin and α,L-alanine</b>

by Mehabaw Getahun Derebe, V.J.T. Raju, Negussie Retta
Published 2002-06-01

<b>Dinuclear metal complexes derived from a bis-chelating heterocyclic ligand</b>

by Worku Assefa, V.J.T. Raju, Yonas Chebude, Negussie Retta
Published 2009-08-01

<b>Studies on transition metal complexes of herbicidal compounds. II: Transition metal complexes of derivatized 2-chloro-4-ethylamino-6-isopropylamino-<i>s</i>-triazine (atrazine)<...

by Negussie Retta, Jan Åke Jönsson, Theodros Solomon, V.J.T. Raju, Negussie Megersa, Worku Dinku
Published 2003-06-01

Studies of transition metal complexes of herbicidal compounds. I: Transition metal complexes of 2-methylthio-4-azido-6-isopropylamino-s-triazine (aziprotryn)

by Worku Dinku, Negussie Megersa, V.J.T. Raju, Theodros Solomon, Jan Åke Jönsson, Negussie Retta
Published 2001-06-01

Dietary Fluoride Intake and Associated Skeletal and Dental Fluorosis in School Age Children in Rural Ethiopian Rift Valley

by Aweke Kebede, Negussie Retta, Cherinet Abuye, Susan J. Whiting, Melkitu Kassaw, Tesfaye Zeru, Masresha Tessema, Marian Kjellevold
Published 2016-07-01