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1Publicado 1999St. Petersburg : Russian Academy of Sciences, Insitute of the History of Sciences and Technology, St. Pertersburg Branch, 1999.28 p. ; 21 cm.Materias: “...Biology Germany History Congresses....”
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2por Löwenberg, Dieter, 1942-
Publicado 1978Mainz : [s.n.], 1978.129, [2] p. : ports. ; 21 cm.Materias: “...Biology Germany History 19th century....”