Mortensen, Theodor,  1868- <br/><br/>
A monograph of the Echinoidea. 
1.-      By Dr. Th. Mortensen. 
 - Copenhagn,  C. A. Reitzel,  1928- 
 - v.  ill., plates,diagrs.  33 1/2 cm. 
<br/><br/> Published at the expense of the Carlsberg-fund. 
<br/><br/>Contains references. 
<br/><br/>Contents.- I. Cidaroidea.  Text and atlas of plates.  2v. 1928.  - II.  Both riocidaroida. Mclonechinoida, Lepidocentroida and Stirodonata.  Text and atlas of plates.  1935-       V. [pt.] 1. Spatangoida. I. 1950.  [pt.] 2. Spatangoida.  II. 1951- 
<br/><br/><label>LCCN: </label>s  36000004  
<br/><br/><label>LC Class. No.: </label>QL384.E2  / M69