Title Natural Alumina as an Efficient and Reusable Reagent for Crossed-Aldol Condensation of Ketones with Aromatic Aldehydes under Solvent-Free Conditions" , Razi University, Kermanshah, Iran Type Presentation Keywords Not Registered! Abstract Not Registered! Researchers (Fourth Researcher), (Third Researcher), Bagher Eftekhari-Sis (Second Researcher)