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  1. By: Ludvigsen, Rolf. - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, 1978
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
  2. By: Bolton, Thomas Elwood, - Copeland, M. J. (Murray John), - Ludvigsen, Rolf. - Wagner, Frances J. E., - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, 1979-1985
    Holding Institution: Royal Ontario Museum
  3. By: Ludvigsen, Rolf. - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, 1979
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
  4. By: Landing, Ed. - Ludvigsen, Rolf. - Von Bitter, Peter H. - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, 1980
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
  5. By: Ludvigsen, Rolf. - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, 1982
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
  6. By: Ludvigsen, Rolf. - Tripp, Ronald P. (Ronald Pearson), - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, 1990. c1989
    Holding Institution: Royal Ontario Museum