1. 1
    Published 1990
    ...HC 683.5 .P218 d...
    Journal
  2. 2
    Published 1993
    ...HT 421 .R9482...
    Journal
  3. 3
    Published 1990
    ...HD 2346 .N5 .E55...
    Journal
  4. 4
    Published 1992
    ...HQ 799 .N5 .N5324...
    Journal
  5. 5
    Published 2002
    ...HQ 799 .N5 .C752...
    Journal
  6. 6
    Published 2001
    ...HV 5000 .N5 .D794...
    Journal
  7. 7
    Published 2005
    ...HD 2346 .N5 .E61...
    Journal
  8. 8
    Published 1978
    ...HE 561 .N532...
    Journal
  9. 9
    Published 1988
    ...HC 683.5 .Z9 .E5 .C758...
    Conference Proceeding Journal