00300nam a2200121 a 450000500170000002000150001708200200003210000190005224500340007125000120010526000420011730000190015920251203091725.0  a0136307167  a551.46,bD, GRO  aGross, M.Grant  aOceanography: a view of earth  a6th ed.  aEnglewood CliffsbPrentice-Hallc1992  axiv,446p, 26cm