Check out Ralph Greenberg's current and previous haircuts:
Ralph Greenberg has had various haircuts in the past decade. He reached fame as a talented mathematician. However, the American mathematician is mainly known for his extradordinary looks and his pleasant character. Rumors and gossip about the 80-year old's hairstyle are continously a topic in celebrity magazines and tabloids. Check out Ralph Greenberg's classic haircuts in the image box below:
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