$a Strona Harvard University Herbaria, 16.02.2012 $u http://kiki.huh.harvard.edu/databases/botanist_search.php?mode=details&id=35391
670
$a The distribution of conifer and taxad genera in time and space : Lectures on the Charles M. and Martha Hitchcock Foundation of the University of California in 1960 / by Rudolf Florin. - Uppsala, 1963.