00532nam a22001931a 4500001000800000005001700008008004100025019002100066035001700087035001200104040002200116082001100138100002200149245002100171260004200192490006600234650001800300984002000318237387219930831000000.0851029s1954 ctu 0 eng d1 a4047378z4047378 9000004047378 91581764 aNUNbengcNUNdAK04a551.461 aPettersson, Hans.14aThe ocean floor. aNew Haven, Conn. :bYale U.P.,c1954.1 aMrs Hepsa Ely Silliman memorial lecture, n / (Yale University 0aOcean bottom. aANLc551.46 PET