American and English ball clays
By: by H.H. Sortwell, Associate Ceramic Engineer, Bureau of Standards. January 13, 1923 ...
Series: [United States] Bureau of Standards. Technologic papers,; no. 227
Publisher: Govt. Print. Off.
Published: 1923
Place of publication: Washington
Language: eng
Number of pages: 181
Subjects: Clay -- United States; Clay -- Great Britain