1. 1
    ...HJ 99.6 .A2 .W527...
    Serial
  2. 2
    Published 1987
    ...HJ 2211.8 .W527 1987...
    Book
  3. 3
    ...HJ 99.6 .A2 .W527...
    Serial
  4. 4
    ...HJ 99.6 .A2 .S797...
    Journal