Olsson, Axel A.  1889-1976. <br/><br/>
Notes on Siphocypraea, 
by Axel A. Olsson and Richard E. Petit. 
 - Ithaca, N.Y.,  Paleontological Research Institution,  1968. 
 - 280-289 p.  plate.  24 cm. 
 - Bulletins of American paleontology,  v. 54, no. 242 .
<br/><br/>Bibliography: p. 284-285. 
<br/><br/><label>LCCN: </label>gs 68000133 //r90 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Siphocypraea.<br/>Paleontology--Miocene.
<br/><br/><label>LC Class. No.: </label>QE809  / .S504 
<br/><br/><label>Dewey Class. No.: </label>564/.3