scholarly journals Special issue : improvement of water quality and bottom sediment of eutrophicated waters.Exawination of purification system for eutroplcated water in moats and lakes.

1990 ◽  
Vol 19 (2) ◽  
pp. 88-93 ◽  
Author(s):  
Munetaka ISHIKAWA ◽  
Sadaaki MURAKAMI ◽  
Hiroshi NAKANISHI ◽  
Shigehisa IWAI
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