Clay products manual.
Contributors: Kelch, Norman Wallace, 1891- comp.; Poulsen, Martin Christian, joint comp.
Publisher: Clay products institute of California
Published: 1930
Place of publication: [Los Angeles]
Language: eng
Subjects: Clay industries -- Handbooks, manuals, etc.
Genres: Handbooks, manuals, etc.
Notes: Various pagings.
"Compiled by Norman W. Kelch, secretary-manager ... assisted by M. C. Poulsen."