1. 1
    by Turner, Ralph H.
    Published 1986
    ...HV 599 .T951...
    Book
  2. 2
    by Gusfield, Joseph R., 1923-
    Published 1981
    ...HE 5620 .D7 .G982...
    Book
  3. 3
    by Webb, Gary R.
    Published 1999
    ...HV 551.2 .U58 pp no. 292...
    Book