1. 1
    ...HD 890.6 .Z63 .O87...
    Thesis Book
  2. 2
    ...HD 9161 .M23 .U4 .H674...
    Thesis Book
  3. 3
    ...HN 934 .T5 .L334...
    Thesis Book
  4. 4
    by Heijman, Willem
    Published 1991
    ...HC 79 .E5 .H465...
    Thesis Book
  5. 5
    ...HD 9466 .A7852 .F645...
    Thesis Book
  6. 6
    ...HD 2147 .S381...
    Thesis Book