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Scientifically, one will make 3 distinctions:
#Primary source : text which is a firsthand written evidence of history, made at the time of the [[Events_in_GRAMPS|event]] by someone who has seen it happen. Eg: diaries, certificates, newspapers, ...
#Secondary source : Written accounts of history based upon the evidence from primary sources and other secondary sources, offering commentary and analysis. Eg: history books, genealogical publications,...
#Tertiary source : selection and compilation of primary and secondary sources. Eg: library catalogue, bibliographies, ...
