1. 1
    ...HN 513.5 .T198...
    Thesis Book
  2. 2
    by Deursen, Arie Theodorus van
    Published 1991
    ...HN 513 .D485...
    Book
  3. 3
    by Cox, Robert Henry
    Published 1993
    ...HN 513.5 .C878...
    Book
  4. 4
    Published 1998
    ...HQ 1236.5 .N4 .G325...
    Book
  5. 5
    by Blokland-Potters, Talja
    Published 2003
    ...HT 151 .B55913 2003...
    Book