sound, microphone and annoyance | 100 years of knorozov | died leonid shvartsman and leonid sergeev | zzzh-160

knorozov died leonid died leonid shvartsman leonid shvartsman leonid shvartsman leonid shvartsman leonid sergeev leonid sergeev zzzh leonid shvartsman died leonid years knorozov died leonid sergeev knorozov died leonid 100 years knorozov years knorozov knorozov sergeev zzzh 160 sergeev zzzh microphone annoyance 100 microphone annoyance sound microphone annoyance sound microphone shvartsman sergeev microphone sound annoyance 100 years died zzzh 160 100 years zzzh years annoyance annoyance 100 100 160