Benzil bisisonicotinoyl hydrazone complexes of tervalent metals Ti,Zr, Sn, Hf and Th Ramadan M.El-Bahnasawy, Fathy A.El-Saied, Eiman H.A.Gaafer, Mohammed A.Wahba 抽象的
The ESI approach: integrating environmental, geographical and social data to assess sustainability in hydrographic basins Edivando Vitor do Couto 抽象的