. . "2015-03-13"^^ . "A été professeur, Colorado state university, Fort Collins" . . . "0000000081076357" . . . "ISNI" . . "2015-03-13" . . "Robert Alton Young"@fr . "Determining the economic value of water : concepts and methods / Robert A. Young, 2005. - . - LC authorities. - http://authorities.loc.gov. - 2006-07-13"@fr . . "15081231"^^ . . "2006-07-13" . . "Robert Alton Young" . . . . . "male" . . "Young" . "A été professeur, Colorado state university, Fort Collins" . "Robert Alton" . "A été professeur, Colorado state university, Fort Collins"@fr . . . . . "1931"^^ .