anybody have this papers provide below papers for solvent recovery projects in pharmaceutical industry

pl z help me

"Extractive Distillation: Separating Close-Boiling-Point Components",Chemical engineering,November 1, 1998.
Designing Azeotropic Distillation Columns,Chemical Engineering, August 1, 1999
DISTILLATION-HOW TO PUSH A TOWER TO ITS MAXIMUM CAPACITYs, Chemical Engineering, August 1, 1998

thanks in advance

kumar