1. 1
    Published 1977
    ...A. A. Balkema,...
    Book
  2. 2
    by Postma, J. W.
    Published 1968
    ...Balkema (A.A.),...
    Book
  3. 3
    Published 1995
    ...A.A. Balkema,...
    Conference Proceeding Book
  4. 4
    Published 1996
    ...A.A. Balkema,...
    Conference Proceeding Book
  5. 5