1
Έκδοση 1960
“...National Research Council. National Academy of Sciences. Committee on Clay Minerals...”
Βιβλίο
2
Έκδοση 1959
“...National Research Council. National Academy of Sciences. Committee on Clay Minerals...”
Βιβλίο
3
Clays and clay minerals : proceedings of the eighth national conference on clays and clay minerals /
Έκδοση 1960
“...National Research Council. National Academy of Sciences. Committee on Clay Minerals...”
Βιβλίο