1. The lognormal distribution of the elements;Ahrens;Geochim. et Cosmochim. Acta,1954
2. Association of plants and minerals;Buck;J. N. Y. Bot. Gdn.,1949
3. A preliminary study of aluminum and the tea bush;Chenery;Plant and Soil,1955
4. Contributions to geochemical prospecting for minerals;Harbaugh;U.S. Geol. Survey.,1952
5. Malmletningsteknikens nuvarande Ståndpunkt;Hedström;Med. Jernkontorets Gruvbyra (Uppsala),1945