1. 1
    ...HN 930.7 .A1 .P117...
    Journal
  2. 2
    Published 1986
    ...HN 690.8 .A8 .S683...
    Journal
  3. 3
    Published 1972
    ...HQ 1101 .B863...
    Journal
  4. 4
    Published 1995
    ...HV 4 .S678...
    Journal