@phdthesis{1965,
  keywords = {Census records},
  author = {Craig Lefevre},
  title = {The spatial variation and spatial distribution of the population age structure},
  abstract = {A geographical study of age-groups, as a basis for planning schools and housing. Twenty demographic variables such as ethnic status, sex, occupation, education and income are considered.},
  year = {1974},
  number = {Dissertation/Thesis, Unpublished},
  pages = {113 p. bibl., graphs, tables, maps+},
  publisher = {University of Waterloo (B.E.S. thesis, Geography)},
}