%0 conference lecture %@ %A Bernem, K.-H.van,Grotjahn, M.,Knuepling, J.,Neugebohrn, L.,Ramm, G.,Sach, G.,Suchrow, S. %D 1988 %J 6th International Wadden Sea Symposium %N %P %T Ecological mapping of mud flat areas in the German Wadden Sea %U %X