00478nam a2200145Ia 4500008004100000010001200041040001700053082002400070100001900094245003800113260004300151300001800194440006800212650005200280190327s9999||||xx |||||||||||||| ||und||  a54-9521  aNITILcNITIL  221sta551.46bP499O  aPetterson Hans 0aThee Ocean floorc Petterson Hans  aNew HavenbYale University Pressc1954  axv, 181p: ill  aMrs Hepsa Ely Silliman memorial lectures/ ed by Yale University  aOcean bottom; Oceanography; Sediments (Geology)