Bulletin of the Japan Sea National Fisheries Research Institute,  No.21 (1969) 

 - Niigata,  Japan Sea National Fisheries,  1969, 
 - 88p.  25cm 
 - Bulletin of the Japan Sea National Fisheries Research Institute  ; No.21 .
<br/><br/><label>Subjects--Topical Terms: </label><br/> National Fisheries Research Institute<br/> Japan