1. 1
    ...HC 661 .N5323...
    Journal
  2. 2
    Published 1994
    ...HC 661 .N5323...
    Journal
  3. 3
    Published 1993
    ...HC 621 .N532 n...
    Journal
  4. 4
    Published 1995
    ...HC 661 .A5 .R336...
    Journal
  5. 5
    Published 2001
    ...HF 5001 .I35...
    Journal
  6. 6
    Published 1996
    ...HC 665 .N5322 p...
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    Journal