Igor S. Popovich

• El exito en las entrevistas de trabajo (LIBRO PRACTICO) (Libro Practico / Practical Book)
• Tube Guitar Amplifiers Volume 2
• Audiophile Vacuum Tube Amplifiers Volume 3
• El Exito En Las Entrevistas De Trabajo/Success in Job Interviews
• Managing consultants
• Tube Guitar Amplifiers Volume 1
• Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 1
• Transformers for Tube Amplifiers