<p>Fauna u. Flora d. Golfes v. Neapel. Cephalopoden Bd. 2 <br>
Taf. 25 <br>
.!. Naef del. <br>
Verlag v. H. Friedländer h. Sohn in Berlin <br></p>
J. B. Obernetler in München
Naef, Adolf
1921
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