Bleaching earths
Siddiqui, M. K. Hasnuddin
Bleaching earths - Oxford : Pergamon Press, 1968. - ix,86p. : ill. ; 23cm.
Bentonite
Fuller's earth
Clay
PAM TN948.B4S55
Bleaching earths - Oxford : Pergamon Press, 1968. - ix,86p. : ill. ; 23cm.
Bentonite
Fuller's earth
Clay
PAM TN948.B4S55