Kramer, D.E, <br/><br/>
Physical data from a study of size, weight and gonad quality for the green sea urchin (Strongylocentrotus dröbachiensis) over a one-year period. 

 - 68 hojas. 
<br/><br/> Fisheries and marine service manuscript report. 1978. no. 1476. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ERIZO.<br/>GONADAS.<br/>STRONGYLOCENTROTUS DROEBACHIENSIS.
<br/><br/><label>Dewey Class. No.: </label>FOLLETOS