Pencho Genchev

• Ikonimika, organizatsiia i planirane na materialno-tekhnicheskoto snabdiavane
• Ikonomika i organizat͡s︡ii͡a︡ na materialno-tekhnicheskoto snabdi͡a︡vane
• Kratŭk terminologichen rechnik po materialno-tekhnichesko snabdi︠a︡vane