1. 1
    by Kear, G. R. (Gordon Robert)
    Published 1980
    ...HT 169 .N52 .P17 .K24...
    Book
  2. 2
    by Davenport, John C.
    Published 1984
    ...HT 169 .N52 .A8 .D247...
    Book
  3. 3
    by Mabon, Richard R. J.
    Published 1991
    ...HT 169 .N51 .M112...
    Thesis Book
  4. 4
    by Falconer, Garth, 1959-
    Published 2015
    ...HT 169 .N51 .F182 2015...
    Book