00335nam a22001097a 450000500170000000800410001708200150005810000230007324500800009626000330017650000160020920251210122741.0251210b1976    enk||||| |||| 00| 0 eng d  223a304.6   aSHRYOCK, Henry S.   aThe method  and materials of demographycHenry S. Shryock;  Jacob S. Siegel  aLondonbAcademic Pressc1976  aF. Geografi