TY  - BOOK
AU  - Kirk,Raymond E.
TI  - The manufacture of Portland cement from marl,
T2  - The University of Minnesota. Engineering Experiment Station. Bulletin
AV  - TP883 .K5
PY  - 1923///]
CY  - Minneapolis
KW  - Portland cement
KW  - Marl
N1  - Bibliography: p. [48]-52
ER  -