=LDR 22 4500 =001 5945 =082 04$a551.46 RUS =100 1\$aRussell, R. C. H. =245 10$aWaves and tides =260 \\$aLondon :$bHutchinson,$c1952 =650 \0$aBooks =700 1\$aMacmillan, D. H. =852 \\$bFreeman Library$h551.46 RUS