1. Copper in peat bog formations of the Middle Urals;Al'bov;Sov. Geol.,1968
2. Reduction of uranium by natural organic substances;Andreyev;Geochem. Int.,1964
3. Geochemical prospecting of a uraniferous bog at Masugnysbyn, Northern Sweden;Armands,1967
4. Geochemical studies U, Mo and V in a Swedish Alum Shale;Armands;Stockholm Contrib. Geol.,1974
5. The role of humic acids from Tasmanian Podzolic soils in mineral degradation and metal mobilization;Baker;Geochim. Cosmochim. Acta,1973