"Pegmatites / David London, 2008. - . - LC Authorities. - http://authorities.oclc.gov. - 2009-03-12"@fr . "VIAF" . . "2013-08-06"^^ . "0000000109193003" . "David London" . . . . "15970614"^^ . "1953"^^ . . . . . . "2013-08-07" . . . . . . "London" . . "male" . "David" . "David London"@fr . . . . . "2009-03-12" .