Source: |
Supplement to: Ljunggren, P (1953): Some Data concerning the Formation of Manganiferous and Ferriferous Bog Ores. Geologiska Föreningens i Stockholm förhandlingar, GFF (The transactions of the Geological Society of Sweden), 75(2), 277-297, https://doi.org/10.1080/11035895309454173
|
yr:1953
|
|
|
|