"Israel" . . . . "Dissidenten." . . "Soviet Union" . . . "Biography"@en . "Biography" . . . . . . . . . . . . . . . . . "Refusenik, trapped in the Soviet Union"@en . "Refusenik, trapped in the Soviet Union" . . . . "Refusenik : trapped in the Soviet Union" . . "Refusenik : trapped in the Soviet Union"@en . . . . . . . . . . . . . . . . "Natuurkundigen." . .