1. 1
    Published 1985
    ...HC 59.7 .S678...
    Book
  2. 2
    Published 1993
    ...HD 73 .E19...
    Book
  3. 3
    Published 1994
    ...HN 980 .W0111...
    Conference Proceeding Book
  4. 4
    Published 1993
    ...HC 59 .D498...
    Book
  5. 5
    Published 1993
    ...HF 4055 .A748...
    Conference Proceeding Book
  6. 6
    Published 1994
    ...HD 73 .C244...
    Book