3 Callow,M.E.,A world-wide survey of fouling on non-toxic and three anti-fouling,6th lnrernational Congress on Marine Corrosion and Fouling(Marine Biology).1984,325-346.
[4]
4 Meenakumari,B.and N.B.Nair,Ecology of fouling in Cochin harbour,Ibid,1984.159-170.