Clays and clay minerals /
Clays and clay minerals / Proceedings of the fourth national conference on clays and clays minerals
- Washington D C: National Academy of Sciences, 1956.
- vii, 444 p. :
75649090
Clay
Clay minerals
Clay industries
Clay.
Clay industries.
Clay minerals.
552.5
75649090
Clay
Clay minerals
Clay industries
Clay.
Clay industries.
Clay minerals.
552.5