Media type: E-Article Title: Trends in the availability and collection of material for family research Contributor: Haavio-Mannila, Elina Published: Finnish Yearbook of Population Research, 1977 Published in: Finnish Yearbook of Population Research (1977), Seite 83-93 Language: Not determined DOI: 10.23979/fypr.44718 ISSN: 1796-6191; 1796-6183 Keywords: General Earth and Planetary Sciences ; General Environmental Science Origination: Footnote: Access State: Open Access