1. 1
    Published 1987
    ...HF 1642.5 .D598...
    Book
  2. 2
    by Jones, Bob, 1939-
    Published 1992
    ...HC 665 .J78...
    Book
  3. 3
    ...HC 665 .R884...
    Book
  4. 4
    Published 1989
    ...HF 51.5 .M821...
    Journal