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. 1930 Jan;2(1):56–62.

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Lazzaro Spallanzani

Guiseppe Franchini

Prof Guiseppe Franchini

¹Bologna, Italy

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¹

¹Bologna, Italy

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License, which permits non-commercial use and redistribution provided that the original author and source are credited.

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PMCID: PMC7945809 PMID: 33944344

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Fig. 1.
on p.57

Fig. 2.
on p.57

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