Phoebus Levene Phoebus Levene Levene Phoebus Levene English Phoebus Levene Phoebus Levene was first discovered Phoebus Levene Phoebus Levene Phoebus Levene Phoebus Levene Phoebus Levene view article was first discovered [en] Phoebus Levene П. А. Левена Phoebus Levene П.А. Левена was first discovered