Kellogg, Remington <br/><br/>
Three Meiocene Porpoises from the Calvert Cliffs, Maryland 

 - Washington,D.C :   Smithsonian Institution,   1955. 
 - 101 p. :   il. ;   21 cm. 
 - Smithsonian Miscellaneous Colections ;   Vol.105 Nš 3354 .