00548nam a22001817a 450000500170000000800410001704000070005824500160006525000330008149000240011452001280013865000180026665000090028465000230029365000140031665000170033065000190034720250519112339.0250519b        |||||||| |||| 00| 0 eng d  cDO  aPolar bears  aDecember 2000 Vol. 198 No. 6  aNational Geographic  aBlue Nile, Polar Bears, Dawn of Humans, Fiordland, In Search of Lake Wobegon, Journey to Shipton's Arch, North Pole, Alaska  xSACRED WATERS  xBEAR  xTHE DAWN OF HUMANS  xFIORDLAND  xLAKE WOBEGON  xSHIPTON'S ARCH