The origin, mineralogy and distribution of the refractory clays of the United States
Greaves-Walker, A. F
The origin, mineralogy and distribution of the refractory clays of the United States - North Carolina State College of Agriculture and Engineering : Raleigh , 1939
87p.
The origin, mineralogy and distribution of the refractory clays of the United States - North Carolina State College of Agriculture and Engineering : Raleigh , 1939
87p.