1. 1
    Published 1991
    ...HD 6958.5 .L125...
    Journal
  2. 2
    Published 1990
    ...H 1 .F771...
    Journal
  3. 3
    Published 1996
    ...HV 5715.5 .H688...
    Journal
  4. 4
    Published 1998
    ...H 1 .F771...
    Journal
  5. 5
    Published 1998
    ...HV 5715.5 .H688...
    Journal
  6. 6
    Published 1989
    ...HC 59.69 .D489...
    Journal