Announcement on the activation of raw Fuller's earth.

[1] ECKART, 1925, BLICHERDE, P39

[2] ECKART, 1929, BLEICHERDE BRAUNSCHW, P37

[3] ECKART O, 1929, BLEICHERDE, P57

[4] Hofmann U, 1933, Z KRISTALLOGR, V86, P340

[5] NEUMANN, 1927, ANGEW CHEM-GER EDIT, V40, P348

[6] NUTTING PG, 1933, BLEACHING CLAYS

[7] 1934, ANGEW CHEM-GER EDIT, V47, P821

[8] 1932, BER DTSCH KERAM GES, V13, P377

[9] 1934, ANGEW CHEM-GER EDIT, V47, P539

[10] 1933, LANDWIRTSCH VERSUCHS, V115

[1] ECKART, 1925, BLICHERDE, P39

[2] ECKART, 1929, BLEICHERDE BRAUNSCHW, P37

[3] ECKART O, 1929, BLEICHERDE, P57

[4] Hofmann U, 1933, Z KRISTALLOGR, V86, P340

[5] NEUMANN, 1927, ANGEW CHEM-GER EDIT, V40, P348

[6] NUTTING PG, 1933, BLEACHING CLAYS

[7] 1934, ANGEW CHEM-GER EDIT, V47, P821

[8] 1932, BER DTSCH KERAM GES, V13, P377

[9] 1934, ANGEW CHEM-GER EDIT, V47, P539

[10] 1933, LANDWIRTSCH VERSUCHS, V115