Un demi-siècle (1907-1956) de notes, communiquées aux académies de Paris, d'Amsterdam, des Lincei, suivies par des observations et commentaries.
Reproduites avec le concours du Centre national de la recherche scientifique.
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| Item Link | Original Source |
|---|---|
| Limited (search only) v.1 | University of California |
| Limited (search only) v.1 | University of Michigan |
| Limited (search only) t.1 | Pennsylvania State University |
| Limited (search only) v.2 | University of California |
| Limited (search only) v.2 | University of Michigan |
| Limited (search only) t.2 | Pennsylvania State University |