TY  - BOOK
AU  -  Beutelspacher,H.
AU  -  Der Mavel,H.W.
TI  -  Atlas of electron microscopy of clay minerals and their mixtures : :  picture atlas / 
U1  -  549.6 BEU 
PY  - 1968///
CY  -  Armsterdam : 
PB  -  Elsevier Publishing Company, 
KW  -  Atlases
KW  -  Scientific
ER  -