1. 1
    by Polson, W. J.
    Published 1922
    ...HG 2051 .D3 .P778...
    Book
  2. 2
  3. 3
    by Hempenstall, Peter J.
    Published 1969
    ...HF 3568 .P16 .H491...
    Thesis Book
  4. 4
    by Mönter, Sven
    Published 2005
    ...HV 4320.5 .A3 .M778 2005...
    Book
  5. 5
    by Spoehr, Florence Mann
    Published 1963
    ...HF 3568 .P16 .S762 1963...
    Book
  6. 6
    by Caesar, Rolf, 1944-
    Published 1999
    ...HC 665 .C128 1999...
    Book