"Pfeffer" . "W. Tad" . "Glaciologiste et photographe" . "male" . . "15711681"^^ . "2008-06-27" . . "VIAF" . "Glaciologiste et photographe" . . "W. Tad Pfeffer"@fr . "2013-08-06" . . . "2013-08-06"^^ . . "The opening of a new landscape : Columbia Glacier at mid-retreat / W. Tad Pfeffer, 2007. - . - LC Authorities. - http://authorities.loc.gov. - 2008-06-27"@fr . "0000000035067580" . . . . . . . "Glaciologiste et photographe"@fr . "W. Tad Pfeffer" . . . . . . .