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78. The estimates of early American historical demographers: two steps forward, one step back, what steps in the future? Smith DS Hist Methods; 1979; 12(1):24-38. PubMed ID: 11614604 [No Abstract] [Full Text] [Related]
79. [Not Available]. Burg P Rhein Vierteljahrsbl; 1978; (42):298-383. PubMed ID: 11633050 [TBL] [Abstract][Full Text] [Related]