Columbia Univ., Palisades, NY (USA). Lamont-Doherty Geological Observatory(Columbia Univ., Palisades, NY (USA). Lamont-Doherty Geological Observatory)1985.
Columbia Univ., Palisades, NY (USA). Lamont-Doherty Geological Observatory(Columbia Univ., Palisades, NY (USA). Lamont-Doherty Geological Observatory)1984.
Columbia Univ., Palisades, NY (USA). Lamont-Doherty Geological Observatory(Columbia Univ., Palisades, NY (USA). Lamont-Doherty Geological Observatory)1983.